Improve the LSP popover menu design (#34081)

- Add a slightly different bolt icon SVG so it sits better when with an
indicator
- Attempt to clarify what happens when clicking any of the menu items
- Add descriptions to the tooltips to clarify what each indicator color
means
- Add section titles to clarify in which category each menu item is
sitting on

Release Notes:

- N/A

assets/icons/bolt_filled_alt.svg

@@ -1,3 +1,3 @@
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 </svg>