[8.11] [ES|QL] Make the dashboard SO lighter (elastic#172130) (elasti…

…c#172145)

# Backport

This will backport the following commits from `main` to `8.11`:
- [[ES|QL] Make the dashboard SO lighter
(elastic#172130)](elastic#172130)

<!--- Backport version: 8.9.8 -->

### Questions ?
Please refer to the [Backport tool
documentation](https://github.com/sqren/backport)

<!--BACKPORT [{"author":{"name":"Stratoula
Kalafateli","email":"[email protected]"},"sourceCommit":{"committedDate":"2023-11-29T10:55:21Z","message":"[ES|QL]
Make the dashboard SO lighter (elastic#172130)\n\n## Summary\r\n\r\nThis PR
makes the dashboard SO lighter by removing the initialContext\r\nfrom
the state. It is not needed after the navigation from Discover
to\r\nDashboard and can create SO size problems as it contains a lot
of\r\ninformation for the
transition.","sha":"cb3fd2132f47d43e4d46b8f5b085195cb8dda806","branchLabelMapping":{"^v8.12.0$":"main","^v(\\d+).(\\d+).\\d+$":"$1.$2"}},"sourcePullRequest":{"labels":["release_note:fix","Team:Visualizations","backport:prev-minor","Feature:ES|QL","v8.12.0","v8.11.2"],"number":172130,"url":"https://github.com/elastic/kibana/pull/172130","mergeCommit":{"message":"[ES|QL]
Make the dashboard SO lighter (elastic#172130)\n\n## Summary\r\n\r\nThis PR
makes the dashboard SO lighter by removing the initialContext\r\nfrom
the state. It is not needed after the navigation from Discover
to\r\nDashboard and can create SO size problems as it contains a lot
of\r\ninformation for the
transition.","sha":"cb3fd2132f47d43e4d46b8f5b085195cb8dda806"}},"sourceBranch":"main","suggestedTargetBranches":["8.11"],"targetPullRequestStates":[{"branch":"main","label":"v8.12.0","labelRegex":"^v8.12.0$","isSourceBranch":true,"state":"MERGED","url":"https://github.com/elastic/kibana/pull/172130","number":172130,"mergeCommit":{"message":"[ES|QL]
Make the dashboard SO lighter (elastic#172130)\n\n## Summary\r\n\r\nThis PR
makes the dashboard SO lighter by removing the initialContext\r\nfrom
the state. It is not needed after the navigation from Discover
to\r\nDashboard and can create SO size problems as it contains a lot
of\r\ninformation for the
transition.","sha":"cb3fd2132f47d43e4d46b8f5b085195cb8dda806"}},{"branch":"8.11","label":"v8.11.2","labelRegex":"^v(\\d+).(\\d+).\\d+$","isSourceBranch":false,"state":"NOT_CREATED"}]}]
BACKPORT-->

x-pack/plugins/lens/public/datasources/text_based/text_based_languages.test.ts

@@ -401,6 +401,7 @@ describe('Textbased Data Source', () => {
       );
       expect(suggestions[0].state).toEqual({
         ...state,
+        initialContext: undefined,
         fieldList: textBasedQueryColumns,
         layers: {
           newid: {

x-pack/plugins/lens/public/datasources/text_based/text_based_languages.tsx

@@ -125,6 +125,7 @@ export function getTextBasedDatasource({
       const query = context.query;
       const updatedState = {
         ...state,
+        initialContext: undefined,
         fieldList: textBasedQueryColumns,
         layers: {
           ...state.layers,