Toggle Button: respect disabled state of slotted buttons

[RasmusKjeldgaard]

Which issue does this PR close?

This PR closes no issue

What is the new behavior?

Previously, clicking a disabled button inside the toggle button would still change the state of the toggle button.
Now the toggle button respects the disabled state of any button inside.

Does this PR introduce a breaking change?

• Yes
• No

Are there any additional context?

Checklist:

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