[cupertino_ui] Migrate a snippet in CupertinoCheckbox's API doc to {@example} and add unit tests#12180
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dkwingsmt wants to merge 4 commits into
Draft
[cupertino_ui] Migrate a snippet in CupertinoCheckbox's API doc to {@example} and add unit tests#12180dkwingsmt wants to merge 4 commits into
CupertinoCheckbox's API doc to {@example} and add unit tests#12180dkwingsmt wants to merge 4 commits into
