Compose message dialog visually updates slowly in response to hover.

[pynappo]

Summary:

The input to select recipients of a message in the Compose Message dialog visually takes a significant amount of time to update what entry the cursor is hovered over.

Steps to reproduce:

1. Open the compose message dialog from the Inbox.
2. Open the To: input.
3. Wave cursor around to select different options/leave the dialog area/etc
4. Observe the slow visual color updates.

Expected behavior:

The dialog should be as nearly as visually responsive as the input menu above it:

20241222-173428.mp4

Ignore the custom colors, i have a custom userstyle. Reverting to the stock CSS shows the same performance issue.

Actual behavior:

See above clip.

Additional notes:

Some profiling seems to show a lot of React calls slowing it down. Not sure how to debug further.