[tests][xtro] Fix recent failures (#11386)

New file was not committed (should have been with a rename)

tests/xtro-sharpie/MacCatalyst-VideoToolbox.ignore

@@ -0,0 +1,6 @@
+### API not marked with unavailable (but without availability for tvOS/iOS/Catalyst)
+!missing-field! kVTVideoDecoderSpecification_PreferredDecoderGPURegistryID not bound
+!missing-field! kVTVideoDecoderSpecification_RequiredDecoderGPURegistryID not bound
+
+## marked not available on iOS/tvOS/watchOS - no mention of newComputePipelineStateWithAdditionalBinaryFunctions
+!missing-pinvoke! VTRegisterSupplementalVideoDecoderIfAvailable is not bound