Move assignment back to initArkoseLabs method

ee/app/assets/javascripts/arkose_labs/components/sign_in_arkose_app.vue

@@ -121,7 +121,6 @@ export default {
           data: { result },
         } = await needsArkoseLabsChallenge(this.username);
         if (result) {
-          this.arkoseInitialized = true;
           await this.initArkoseLabs();
         }
       } catch (e) {
@@ -140,6 +139,8 @@ export default {
       }
     },
     async initArkoseLabs() {
+      this.arkoseInitialized = true;
+
       const enforcement = await initArkoseLabsScript({ publicKey: this.publicKey });
 
       enforcement.setConfig({