fix: Try fixing too late handler registration for file actions

Signed-off-by: Julius Knorr <jus@bitgrid.net>

Author: juliusknorr

src/init.ts

@@ -12,3 +12,10 @@ registerViewerAction()
 window.OCA = window.OCA ?? {}
 window.OCA.Viewer = new ViewerService()
 window.OCA.Viewer.version = appVersion
+
+// Eagerly register any handlers queued before the viewer was initialized.
+// This must happen synchronously so that OCA.Viewer.mimetypes is complete
+// before the file action's enabled() callback is evaluated by the files app.
+if (window._oca_viewer_handlers) {
+	window._oca_viewer_handlers.forEach(handler => window.OCA.Viewer.registerHandler(handler))
+}