[Bug] Restore keyboard controls more easily after using segmentation dropdown

[marcoduering]

Describe the Bug

When loading one or multiple segmentations (basic viewer or segmentation mode) and using the drop-down in the right segmentation sidebar/panel, the keyboard controls are no longer working until one has clicked outside the drop-down or pressed ESC. And importantly, clicking on one of the viewers (which a user will intuitively do) does not restore the keyboard controls, one has to click somewhere on the toolbar or sidebars/panels.

Addressing this would significantly improve the user experience when working with segmentations.

Tested in v3.7.0 and v3.8.0-beta54.

Steps to Reproduce

1. Open a dataset
2. Load one or multiple segmentations
3. Use keyboard controls, e.g. arrow up and down to scroll between images
4. Use the segmentation drop-down in the right sidebar/panel to select or switch segmentation
5. Try again to use keyboard controls, does not work
6. Click on the viewer and try again to use keyboard controls, does not work
7. Click on a sidebar/panel or the toolbar, or press Escape, keyboard controls are restored

The current behavior

Keyboard controls no longer work until one clicks outside of the drop-down (but not on a viewer) or one presses "Escape".

The expected behavior

Ideally, upon selecting a segmentation in the drop-down via mouse-click, keyboard controls are directly restored. As a minimum, a click on the viewer should restore keyboard controls.

OS

Alpine

Node version

20.11.1

Browser

Chrome 122.0.6261.69