[Research] OUI Compliance audit of the `discover` plugin

[BSFishy]

Tracking issue for OUI compliance audit of the discover plugin.

Follow the steps in #3945 to complete the audit, then open another issue with findings. Once the work of performing the audit is done, this issue can be closed.

Related files

size (bytes) | file | notes ---|---|--- 2.7K | [src/plugins/discover/public/application/_discover.scss](https://github.com/opensearch-project/OpenSearch-Dashboards/tree/main/src/plugins/discover/public/application/_discover.scss) | 2.6K | [src/plugins/discover/public/application/angular/doc_table/_doc_table.scss](https://github.com/opensearch-project/OpenSearch-Dashboards/tree/main/src/plugins/discover/public/application/angular/doc_table/_doc_table.scss) | 1.9K | [src/plugins/discover/public/application/components/sidebar/discover_sidebar.scss](https://github.com/opensearch-project/OpenSearch-Dashboards/tree/main/src/plugins/discover/public/application/components/sidebar/discover_sidebar.scss) | 1.1K | [src/plugins/discover/public/application/components/doc_viewer/doc_viewer.scss](https://github.com/opensearch-project/OpenSearch-Dashboards/tree/main/src/plugins/discover/public/application/components/doc_viewer/doc_viewer.scss) | 888 | [src/plugins/discover/public/application/angular/doc_table/components/table_row/_open.scss](https://github.com/opensearch-project/OpenSearch-Dashboards/tree/main/src/plugins/discover/public/application/angular/doc_table/components/table_row/_open.scss) | 670 | [src/plugins/discover/public/application/angular/doc_table/components/table_row/_cell.scss](https://github.com/opensearch-project/OpenSearch-Dashboards/tree/main/src/plugins/discover/public/application/angular/doc_table/components/table_row/_cell.scss) | 520 | [src/plugins/discover/public/application/angular/doc_table/components/table_row/_details.scss](https://github.com/opensearch-project/OpenSearch-Dashboards/tree/main/src/plugins/discover/public/application/angular/doc_table/components/table_row/_details.scss) | 281 | [src/plugins/discover/public/application/embeddable/search_embeddable.scss](https://github.com/opensearch-project/OpenSearch-Dashboards/tree/main/src/plugins/discover/public/application/embeddable/search_embeddable.scss) | 236 | [src/plugins/discover/public/application/angular/context/components/action_bar/_action_bar.scss](https://github.com/opensearch-project/OpenSearch-Dashboards/tree/main/src/plugins/discover/public/application/angular/context/components/action_bar/_action_bar.scss) | 227 | [src/plugins/discover/public/application/angular/doc_table/components/_table_header.scss](https://github.com/opensearch-project/OpenSearch-Dashboards/tree/main/src/plugins/discover/public/application/angular/doc_table/components/_table_header.scss) | 201 | [src/plugins/discover/public/application/angular/context/_index.scss](https://github.com/opensearch-project/OpenSearch-Dashboards/tree/main/src/plugins/discover/public/application/angular/context/_index.scss) | 132 | [src/plugins/discover/public/application/components/sidebar/discover_field_bucket.scss](https://github.com/opensearch-project/OpenSearch-Dashboards/tree/main/src/plugins/discover/public/application/components/sidebar/discover_field_bucket.scss) | 121 | [src/plugins/discover/public/application/components/sidebar/discover_field_details.scss](https://github.com/opensearch-project/OpenSearch-Dashboards/tree/main/src/plugins/discover/public/application/components/sidebar/discover_field_details.scss) | 101 | [src/plugins/discover/public/application/angular/directives/_histogram.scss](https://github.com/opensearch-project/OpenSearch-Dashboards/tree/main/src/plugins/discover/public/application/angular/directives/_histogram.scss) | 79 | [src/plugins/discover/public/application/components/sidebar/discover_field.scss](https://github.com/opensearch-project/OpenSearch-Dashboards/tree/main/src/plugins/discover/public/application/components/sidebar/discover_field.scss) | 53 | [src/plugins/discover/public/application/angular/_index.scss](https://github.com/opensearch-project/OpenSearch-Dashboards/tree/main/src/plugins/discover/public/application/angular/_index.scss) | 51 | [src/plugins/discover/public/application/angular/doc_table/components/table_row/_index.scss](https://github.com/opensearch-project/OpenSearch-Dashboards/tree/main/src/plugins/discover/public/application/angular/doc_table/components/table_row/_index.scss) | 51 | [src/plugins/discover/public/application/angular/doc_table/components/_index.scss](https://github.com/opensearch-project/OpenSearch-Dashboards/tree/main/src/plugins/discover/public/application/angular/doc_table/components/_index.scss) | 49 | [src/plugins/discover/public/application/angular/doc_table/index.scss](https://github.com/opensearch-project/OpenSearch-Dashboards/tree/main/src/plugins/discover/public/application/angular/doc_table/index.scss) | 45 | [src/plugins/discover/public/application/index.scss](https://github.com/opensearch-project/OpenSearch-Dashboards/tree/main/src/plugins/discover/public/application/index.scss) | 43 | [src/plugins/discover/public/application/angular/directives/_index.scss](https://github.com/opensearch-project/OpenSearch-Dashboards/tree/main/src/plugins/discover/public/application/angular/directives/_index.scss) | 39 | [src/plugins/discover/public/application/angular/directives/_no_results.scss](https://github.com/opensearch-project/OpenSearch-Dashboards/tree/main/src/plugins/discover/public/application/angular/directives/_no_results.scss) | 22 | [src/plugins/discover/public/application/angular/context/components/action_bar/_index.scss](https://github.com/opensearch-project/OpenSearch-Dashboards/tree/main/src/plugins/discover/public/application/angular/context/components/action_bar/_index.scss) |

If this issue isn't already assigned to someone and you'd like to take on this work, please ping @BSFishy in the comments and I can assign it to you.

[BSFishy]

@ashwin-pc do we need this audit, given Discover 2.0?

[BSFishy]

We can skip this audit, as this work will be done when we do Discover 2.0

[joshuarrrr]

Reopening because I do think we'll need to do this after https://github.com/opensearch-project/OpenSearch-Dashboards/issues/4216 or incorporate it there.