Chore: Try experiments config for FB hosting

Author: ParallelKim

.github/workflows/firebase-hosting-merge.yml

@@ -17,3 +17,5 @@ jobs:
           firebaseServiceAccount: '${{ secrets.FIREBASE_SERVICE_ACCOUNT_ANGULAR_KR_DOCS }}'
           channelId: live
           projectId: angular-kr-docs
+        env:
+          FIREBASE_CLI_EXPERIMENTS: webframeworks

.github/workflows/firebase-hosting-pull-request.yml

@@ -14,3 +14,5 @@ jobs:
           repoToken: '${{ secrets.GITHUB_TOKEN }}'
           firebaseServiceAccount: '${{ secrets.FIREBASE_SERVICE_ACCOUNT_ANGULAR_KR_DOCS }}'
           projectId: angular-kr-docs
+        env:
+          FIREBASE_CLI_EXPERIMENTS: webframeworks