QA:Lots Of Tabs Tabstrip

Build 10031 on combo-box-poc
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BaselineBuild 9514 on main
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Baseline History
Build 100316589555
Current build. There are unaccepted changes, so build 9514 is still the baseline.
Build 951206fff4b
Accepted by James Nash.
Build 9455722228c
Auto-accepted
Build 945243a7a85
Accepted by David Miller.
Commenting is disabled because there's a newer build on this branch