Fix activate scene button + allow removing icon

[bramkragten]

Fixes #8907
Fixes #7877

Proposed change

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 #
• 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

[spacegaier]

The scene play fix works for me. But the coding for the icon saving does not. It now allows to press the save button when you empty the icon field (the delete statement does its job), but the previous icon stays nonetheless (if you go back to the overview it is there and when you go into scene editing again, it is filled again).

Once we have a solution for that, the same fix also needs to be copied to ha-script-editor I think.

[bramkragten]

Mmm that sounds like a backend issue then...

[bramkragten]

home-assistant/core#49248

[spacegaier]

home-assistant/core#49248

Fixes the issue for scenes, but issue still remains for scripts (I copied over the frontend fix and then the frontend allows saving, but the backend still seems to retain the old value).

[bramkragten]

Well this issue / pr is for scenes, scripts can be a separate one :-)