fix: add world: MAIN to Firefox page script registration

Author: addisonbeck

apps/browser/src/autofill/fido2/background/fido2.background.ts

@@ -176,6 +176,7 @@ export class Fido2Background implements Fido2BackgroundInterface {
         { file: await this.getFido2PageScriptAppendFileName() },
         { file: Fido2ContentScript.ContentScript },
       ],
+      world: "MAIN",
       ...this.sharedRegistrationOptions,
     });
   }