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

[BSFishy]

Tracking issue for OUI compliance audit of the vis_type_vega 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/vis_type_vega/public/_vega_vis.scss](https://github.com/opensearch-project/OpenSearch-Dashboards/tree/main/src/plugins/vis_type_vega/public/_vega_vis.scss) | 394 | [src/plugins/vis_type_vega/public/_vega_editor.scss](https://github.com/opensearch-project/OpenSearch-Dashboards/tree/main/src/plugins/vis_type_vega/public/_vega_editor.scss) | 331 | [src/plugins/vis_type_vega/public/vega_inspector/vega_data_inspector.scss](https://github.com/opensearch-project/OpenSearch-Dashboards/tree/main/src/plugins/vis_type_vega/public/vega_inspector/vega_data_inspector.scss) | 209 | [src/plugins/vis_type_vega/public/index.scss](https://github.com/opensearch-project/OpenSearch-Dashboards/tree/main/src/plugins/vis_type_vega/public/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.

[miamia1999]

Could you, please, assign this issue to me? Thank you

[joshuarrrr]

@miamia1999 Go ahead and give it a go - there are likely a number of changes we'll need to make here long term, and I can help if you have any questions.