Add shortcut hint to assist dialog

[jpbede]

Proposed change

Add a shortcut hint to the assist dialog when it is opened via the topbar.

Opened via shortcut	Opened via topbar

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 Assist dialog lacks keyboard shortcut tip underneath like other Quick Bar dialogs have #23725
• 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

[marcinbauer85]

@jpbede This is a nice addition and aligned with other use cases in HA 👍

[wendevlin]

Thank you @jpbede!

[balloob]

I don't think that this is not a good addition. The tip is big, takes up a lot of space and is shown every time. The tip at the bottom of the config screen is hidden off screen and only seen when you scroll all the way to the bottom.

I suggest we revert this and find a better way to teach this to users. For example, MacOS teaches users about shortcut keys in the menu that allows opening options:

[wendevlin]

I agree @balloob, I merged it because of the Ok from Marcin.

@marcinbauer85 can you please have another look and tell us your pro/cons about it?