fix: restore fullscreen pages on newer Steam clients (#962)

step one of these fixes

frontend/src/errorboundary-hook.tsx

@@ -24,7 +24,7 @@ class ErrorBoundaryHook extends Logger {
     window.__ERRORBOUNDARY_HOOK_INSTANCE = this;
 
     // valve writes only the sanest of code
-    const exp = /^\(\)=>\(.\|\|(?:.\(|\(.=)new .\),.\)$/;
+    const exp = /^\(\)=>\([\w$]+\|\|(?:[\w$]+\(|\([\w$]+=)new [\w$]+\),[\w$]+\)$/;
     const initErrorReportingStore = findModuleExport(
       (e) => typeof e == 'function' && e?.toString && exp.test(e.toString()),
     );

frontend/src/router-hook.tsx

@@ -60,7 +60,7 @@ class RouterHook extends Logger {
     if (reactRouterStackModule) {
       this.Route =
         Object.values(reactRouterStackModule).find(
-          (e) => typeof e == 'function' && /routePath:.\.match\?\.path./.test(e.toString()),
+          (e) => typeof e == 'function' && /routePath:[\w$]+\.match\?\.path./.test(e.toString()),
         ) ||
         Object.values(reactRouterStackModule).find(
           (e) => typeof e == 'function' && /routePath:null===\(.=.\.match\)/.test(e.toString()),