Disable unneeded CI workflows

Author: AdamVig

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

@@ -2,10 +2,7 @@
 # https://github.com/firebase/firebase-tools
 
 name: Deploy to Firebase Hosting on merge
-"on":
-  push:
-    branches:
-      - develop
+on: workflow_dispatch
 jobs:
   build_and_deploy:
     runs-on: ubuntu-latest

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

@@ -1,10 +1,5 @@
 name: Deploy to Firebase Hosting on pull request
-
-on:
-  workflow_run:
-    workflows: [build_demo]
-    types:
-      - completed
+on: workflow_dispatch
 
 jobs:
   depoloy_storybook_to_firebase:

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

@@ -2,7 +2,7 @@
 # https://github.com/firebase/firebase-tools
 
 name: build_demo
-"on": pull_request
+on: workflow_dispatch
 jobs:
   build_demo:
     runs-on: ubuntu-latest

.github/workflows/visual-testing.yml

@@ -1,9 +1,5 @@
 name: Playwright Tests
-on:
-  push:
-    branches: [develop, stable]
-  pull_request:
-    branches: [develop, stable]
+on: workflow_dispatch
 jobs:
   test:
     timeout-minutes: 60