Update dropdown adjustments

[silamon]

Proposed change

From @marcinbauer85
I see some issues in how this was implemented.

If we have a togglable action in the context menu we should use icons for both states. Since this is just an enabled/disabled state let's use mdi:checkbox-marked and mdi:checkbox-blank-outline
The last item in this list "Join beta channel" icon: mdi:location-enter, "Leave beta channel" icon: mdi:location-exit

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We may need to patch the checkbox icons as well, since an unchecked state is just nothing in webawesome. If we use icons to show checked state (like how I quickly did it here), we'll lose the accessibility.

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

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Additional information

• This PR fixes or closes issue: fixes #
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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

[wendevlin]

I get what you mean. It should stay type checkbox and use the checked attribute. I'll have a look on how to adopt WA