fix(react): Do not suppress unhandled rejections in promises. (#4155)

When react components chain off promises (angular $q promises) for callbacks (`setState()`, etc), any thrown errors would be swallowed by $qProvider.errorOnUnhandledRejections(true)

This change will cause more noise in the console, but I think this is a necessary change.  When other kinds of rejections occur and spam the console, we should address these cases individually.

app/scripts/modules/core/src/bootstrap/angular.config.ts

@@ -16,13 +16,6 @@ bootstrapModule.config(($httpProvider: IHttpProvider) => {
   };
 });
 
-// Angular 1.6 stops suppressing unhandle rejections on promises. This resets it back to 1.5 behavior.
-// See https://docs.angularjs.org/guide/migration#migrate1.5to1.6-ng-services-$q
-bootstrapModule.config(($qProvider: IQProvider) => {
-  'ngInject';
-  $qProvider.errorOnUnhandledRejections(false);
-});
-
 // Angular 1.6 defaults preAssignBindingsEnabled to false, reset to true to mimic 1.5 behavior.
 // See https://docs.angularjs.org/guide/migration#migrate1.5to1.6-ng-services-$compile
 bootstrapModule.config(($compileProvider: ICompileProvider) => {