Improve UI for component tests in story menu

[JReinhold]

The UI for the context menu can be improved in a few key areas. We already have a design ready that we can implement.

For reference, this is the current UI:

Here are the designs we want to implement instead (as of 2024-11-18):

The core differences from an implementation perspective is:

1. The current design has a split between "Story statuses" (top) and "any menu item content" (bottom), but the new design puts all content into a single "slot". So addon-test has a slot, and Visual Tests have a slot.
2. All (sub)test types (Component tests, a11y, coverage, etc.) must always be shown, even when they haven't run yet. This conflicts directly with the Story Status API where stories only have statuses when something has happened (failed/success/running). in combination with 1, we can't use Story Statuses for content here, addon-test has to internally figure out what content and statuses to show instead. So we'll only use the Story Status API for the dots in the sidebar, not the content in the menu.
3. The new designs have an "edit mode" that essentially functions the same as the Testing Module UI, allowing you to disable/enable any sub test types.

For that reason, we've identified the following tasks:

Tasks

Beta Give feedback

1. Remove Story Statuses from context menu
2. Implement the new context menu API in VTA (to show the status)
3. addon-test: Show statuses of sub tests in the context menu
4. addon-test: Add Edit mode that can toggle sub test types