[ENHANCEMENT] Chat mode selector: center the active mode in view on open

[hannesrudolph]

Type

Enhancement

Problem

Opening the mode selector under the chat box starts the list at the top instead of centering the currently active mode, so users must scroll to find it. Long mode names are truncated in the trigger, making it hard to see the full name.

Context

• Affects users with many modes or when the active mode is far down the list.
• Happens in the chat input’s mode selector; opening the dropdown shows the top of the list with the active item off-screen.

Desired behavior

Center the active mode in view when the dropdown opens. Only scroll if the active mode is outside the visible area.

Reproduction

1. In Chat, pick a mode near the end of the list
2. Close the selector
3. Re-open the selector
4. Actual: list starts at the top; selected mode is off-screen
5. Expected: list opens with the selected mode centered and visible

[roomote]

I'm exploring a potential fix for the mode selector centering issue and will open a PR to share progress.

[roomote]

Opened PR #7883 with my attempt at addressing this issue. All CI checks have passed successfully. The implementation centers the active mode in the dropdown when opened, making it immediately visible to users. Feedback welcome!