RI-7218 Add telemetry collection for Saved Queries panel on Vector Search page

[valkirilov]

Description

Added telemetry collection events to track users' interaction with the Saved Indexes panel on the Vector Search page:

• when users open/close the panel with the Saved Queries
• when users insert saved queries into the editor
• when users change the saved queries based on the index

How to test it

1. Go to Vector Search page - http://localhost:8080/{databaseId}/vector-search
2. Click on the "Saved Queries" button in the top right corner to open the panel (dispatches SEARCH_SAVED_QUERIES_PANEL_OPENED and SEARCH_SAVED_QUERIES_PANEL_CLOSED events)
3. Click on the "Insert" button of a query to add the command in the editor(dispatches SEARCH_SAVED_QUERIES_INSERT_CLICKED event)
4. Change the index from the select field in the Saved Queries panel (dispatches SEARCH_SAVED_QUERIES_INDEX_CHANGED event)

Screen.Recording.2025-08-07.at.16.36.53.mov

Verify Telemetry events

We have the new events for the Vector Search page collected successfully.

Note: Telemetry is collected only if the user decides to opt-in to that.
You control it from Settings page -> Privacy section -> Usage Data toggle.

[github-actions]

Code Coverage - Frontend unit tests

St.❔	Category	Percentage	Covered / Total
🟢	Statements	81.33%	19455/23920
🟡	Branches	66.55%	8424/12658
🟡	Functions	75.25%	5135/6824
🟢	Lines	81.76%	19039/23287

Test suite run success

4958 tests passing in 656 suites.

Report generated by 🧪jest coverage report action from 75c6600