Bug 1883943 - Let the out-of-process file-picker ride the trains r=win-reviewers,gstoll

Differential Revision: https://phabricator.services.mozilla.com/D217849

widget/windows/nsFilePicker.cpp

@@ -249,13 +249,8 @@ static Strategy GetStrategy() {
       return RemoteWithFallback;
 
     default:
-#ifdef NIGHTLY_BUILD
-      // on Nightly builds, fall back to local on crash
+      // by default, fall back to local only on non-crash failures
       return FallbackUnlessCrash;
-#else
-      // on release and beta, remain local-only for now
-      return LocalOnly;
-#endif
   }
 };