[8.x] [Search][Onboarding] Add telemetry for Start Page code view (#193099)

[TattdCodeMonkey]

Backport

This will backport the following commits from main to 8.x:

• [Search][Onboarding] Add telemetry for Start Page code view (#193099)

Questions ?

Please refer to the Backport tool documentation

[kibana-ci]

:yellow_heart: Build succeeded, but was flaky

• Buildkite Build
• Commit: 00851e2fcfdd49f6a856758b33b86e25a331f504

Failed CI Steps

• FTR Configs #9

Test Failures

• [job] [logs] FTR Configs #9 / home app sample data installing should install logs sample data set

Metrics [docs]

Async chunks

Total size of all lazy-loaded chunks that will be downloaded as the user navigates the app

id	before	after	diff
searchIndices	83.3KB	84.1KB	+787.0B

Unknown metric groups

#### ESLint disabled in files | id | [before](https://github.com/elastic/kibana/commit/2b6337964ab40edbf6af678a6255a7720737e12e) | [after](https://github.com/elastic/kibana/commit/00851e2fcfdd49f6a856758b33b86e25a331f504) | diff | | --- | --- | --- | --- | | `searchIndices` | 0 | 1 | +1 | #### Total ESLint disabled count | id | [before](https://github.com/elastic/kibana/commit/2b6337964ab40edbf6af678a6255a7720737e12e) | [after](https://github.com/elastic/kibana/commit/00851e2fcfdd49f6a856758b33b86e25a331f504) | diff | | --- | --- | --- | --- | | `searchIndices` | 3 | 4 | +1 |

To update your PR or re-run it, just comment with: @elasticmachine merge upstream