fix(net6): Adjust assets generation of iOS/Catalyst

Author: jeromelaban

src/SourceGenerators/Uno.UI.Tasks/Content/Uno.UI.Tasks.targets

@@ -51,7 +51,7 @@
   </Target>
 
   <Target Name="UnoAssetsGeneration"
-			  BeforeTargets="_GetLibraryImports;PrepareForBuild;_CheckForContent"
+			  BeforeTargets="_GetLibraryImports;PrepareForBuild;_CheckForContent;_CollectBundleResources"
 			  DependsOnTargets="ResolveProjectReferences"
 			  Condition="'$(DesignTimeBuild)' != 'true' and '$(BuildingInsideUnoSourceGenerator)' == '' and ('$(XamarinProjectType)'!='' or '$(UnoForceProcessPRIResource)'!='')">
 	<!-- Assets -->