## Context
Resolves FE-3126
Just cleaning up the table editor header with a bit of refactors
(pre-req to investigating collapsing filter bar and table editor header
actions into a single row)
## Non-visual changes involved
- Break down components within `GridHeaderActions` into smaller ones
- `IndexAdvisorPopover`
- `SecurityDefinerViewPopover`
- `RealtimeToggle`
- Deprecate use of `useUrlState` in `GridHeaderActions` to use
`useQueryState` instead
- Improve types for `TwoOptionToggle`
## Visual changes involved
- Collapse realtime button toggle into a button icon, with no text (just
tooltip)
- Adjust layout of buttons a little
### Before
<img width="796" height="118" alt="image"
src="https://github.com/user-attachments/assets/436bca94-4d91-471a-a184-487c6f78dc04"
/>
### After
<img width="731" height="132" alt="image"
src="https://github.com/user-attachments/assets/5fd30982-a1fc-4f92-a590-146d1e69d52a"
/>
<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit
* **New Features**
* Index Advisor popover with recommendations.
* Realtime toggle to manage realtime table publication.
* Security Definer view popover with optional autofix.
* Insert menu for adding rows/columns and CSV import.
* **Bug Fixes**
* Adjusted filter bar input sizing for improved readability.
* **Refactor**
* Header layout updated and insert/import actions moved into dedicated
components.
* **Tests**
* Updated end-to-end selectors for the Insert row menu item.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
Joshen Lim