Change the rageshake "app" for auto-rageshakes (#9909)

It's super-confusing to have most auto-rageshakes going to one rageshake app,
but a few to the main app. Let's change the default so we can stop it
happening.

src/IConfigOptions.ts

@@ -99,7 +99,7 @@ export interface IConfigOptions {
     features?: Record<string, boolean>; // <FeatureName, EnabledBool>
 
     bug_report_endpoint_url?: string; // omission disables bug reporting
-    uisi_autorageshake_app?: string;
+    uisi_autorageshake_app?: string; // defaults to "element-auto-uisi"
     sentry?: {
         dsn: string;
         environment?: string; // "production", etc