Make it possible to export support form V2 with meta data

Summary:
This diff enables a full roundtrip of exporting a bug report to file / link, and importing it again.

Styling is not part of this story.

Reviewed By: jknoxville

Differential Revision: D18636418

fbshipit-source-id: ef9a8e3622bdac9361f612d51415a593f4268b80

src/chrome/ShareSheetExportFile.tsx

@@ -29,12 +29,6 @@ const Container = styled(FlexColumn)({
   width: 500,
 });
 
-const Center = styled(FlexColumn)({
-  alignItems: 'center',
-  paddingTop: 50,
-  paddingBottom: 50,
-});
-
 const ErrorMessage = styled(Text)({
   display: 'block',
   marginTop: 6,

src/chrome/ShareSheetExportUrl.tsx

@@ -39,6 +39,7 @@ import CancellableExportStatus from './CancellableExportStatus';
 import {performance} from 'perf_hooks';
 import ShareSheetPendingDialog from './ShareSheetPendingDialog';
 import {getInstance as getLogger} from '../fb-stubs/Logger';
+import {resetSupportFormV2State} from '../reducers/supportForm';
 export const SHARE_FLIPPER_TRACE_EVENT = 'share-flipper-link';
 
 const Container = styled(FlexColumn)({
@@ -142,6 +143,7 @@ export default class ShareSheetExportUrl extends Component<Props, State> {
           requireInteraction: true,
         });
       }
+      store.dispatch(resetSupportFormV2State());
       this.props.logger.trackTimeSince(mark, 'export:url-success');
     } catch (e) {
       if (!this.state.runInBackground) {