fix: add /opt/homebrew/bin to PATH for all steps

.gitea/workflows/pr-iphone-deploy.yml

@@ -33,10 +33,13 @@ jobs:
           sudo xcode-select -s /Applications/Xcode.app
           xcodebuild -version
 
+      - name: Setup PATH
+        run: echo "/opt/homebrew/bin" >> $GITHUB_PATH
+
       - name: Install tools (xcodegen, node, firebase)
         run: |
-          arch -arm64 /opt/homebrew/bin/brew install xcodegen node || true
-          /opt/homebrew/bin/npm install -g firebase-tools
+          brew install xcodegen node || true
+          npm install -g firebase-tools
 
       - name: Generate Xcode project
         run: |