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The PinnedTabs module service, or undefined when that module is not registered. The tab context menu auto-injects a Pin/Unpin item only when this is present (and pinning is enabled); it's an optional enhancement, never a hard dependency.
undefined
The PinnedTabs module service, or
undefinedwhen that module is not registered. The tab context menu auto-injects a Pin/Unpin item only when this is present (and pinning is enabled); it's an optional enhancement, never a hard dependency.