Fix safe padding for bottom sheet and add scroll lock

[piitaya]

Proposed change

Fix safe padding for bottom sheet and add scroll lock
Not sure if it's the right way to import the scroll lock css. WDYT @wendevlin?

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

[wendevlin]

@timmo001 did it like this: https://github.com/home-assistant/frontend/pull/27020/files#diff-f9deeff2e396dcebcb78d60fb440785486b7b68e81f2d833aa75e790d4d373b6R2

And this seem to me a nice way

[piitaya]

Ok, I will update my PR with this change