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### What?
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### How?
Fixes #
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### What?
This PR fixes an issue where assigning a label or description function
to a tab would cause a runtime error due to passing a function to a
client component.
### Why?
To prevent runtime errors when using non-static designations.
### How?
By properly evaluating label and description functions prior to
assignment to their `clientTab` counterpart.
Fixes#10114
Before:
After:
68b5f61641