Fix keyboard for ha-config-entities bulk menus

[karwosts]

Proposed change

Fix some of the menus in ha-config-entities, which are not usable via keyboard (impossible to select options without a mouse):

• Bulk Actions Menu
• Bulk Label Menu - this one is still a little weird as the row has a tabstop both on the individual label rows and on their child checkbox. Pressing space/return on the row does nothing, but pressing space on the checkbox does work, so I'll not propose any change as it is still technically possible to use, but I'm not confident what the best practice here would be.

Following pattern agreed in previous PR #21048

Also just leaving a note of what still doesn't work w/ keyboard (but are handled in different files, I guess ha-data-table):

• Select All/None menu doesn't work
• Entire filters subpanel doesn't work
• Group by doesn't work
• Sort by doesn't work
• Customize dialog doesn't work

Other pages that likely have similar issues as this one (just by cursory glance), that may also need similar fixes:

• ha-automation-picker
• ha-scene-dashboard
• ha-config-integration-page
• ha-config-devices-dashboard
• ha-config-helpers
• ha-script-picker

Type of change

• Dependency upgrade
• Bugfix (non-breaking change which fixes an issue)
• New feature (thank you!)
• Breaking change (fix/feature causing existing functionality to break)
• Code quality improvements to existing code or addition of tests

Example configuration

Additional information

• This PR fixes or closes issue: fixes Entities bulk action menu not keyboard accessible #23769
• This PR is related to issue or discussion:
• Link to documentation pull request:

Checklist

• The code change is tested and works locally.
• There is no commented out code in this PR.
• Tests have been added to verify that the new code works.

If user exposed functionality or configuration variables are added/changed:

• Documentation added/updated for www.home-assistant.io