## Description

This modifies the `MenuAnchor` `onPressed` activation to delay until after the current frame is built, and resolve any focus changes before it invokes the `onPressed`, so that actions that operate on the `primaryFocus` can have a chance of working on the focused item they were meant to work on.

## Related Issues
 - Fixes https://github.com/flutter/flutter/issues/118731

## Tests
 - No tests yet (hence draft still)