Add ProgressView to LegacyViewManagerInterop white list

Summary:
For components to be used with LegacyViewManagerInterop they need to be added to a white list.
This makes it possible to test it out and assure proper functionality.

Reviewed By: shergin

Differential Revision: D17905413

fbshipit-source-id: f5ab523cca6227e99a7607ca1927005392b1ae36

React/Fabric/Mounting/ComponentViews/InteropView/RCTLegacyViewManagerInteropComponentView.mm

@@ -32,7 +32,7 @@ using namespace facebook::react;
 
 + (BOOL)isSupported:(NSString *)componentName
 {
-  static NSSet<NSString *> *supportedComponents = [NSSet setWithObjects:@"Picker", @"DatePicker", nil];
+  static NSSet<NSString *> *supportedComponents = [NSSet setWithObjects:@"Picker", @"DatePicker", @"ProgressView", nil];
   return [supportedComponents containsObject:componentName];
 }