chore(ci): Separate workflows by workflow trigger, rename config files

.github/workflows/pr-labeler.yml

@@ -1,4 +1,4 @@
-name: Pull request labeler
+name: Label PRs by path
 
 on:
   - pull_request_target
@@ -16,24 +16,5 @@ jobs:
     steps:
       - uses: actions/labeler@v4
         with:
+          configuration-path: ".github/pr-labels-by-path.yml" # Path to pr-path-labeler config
           repo-token: "${{ secrets.GITHUB_TOKEN }}"
-
-  # Docs: https://github.com/cbrgm/pr-size-labeler-action
-  label-by-size:
-    # do not run on forks
-    if: github.repository == 'mdn/content'
-    needs: label-by-path
-    runs-on: ubuntu-latest
-    steps:
-      - name: Checkout repository
-        uses: actions/checkout@v4
-        with:
-          persist-credentials: false
-
-      - name: Label PR based on size
-        uses: cbrgm/pr-size-labeler-action@main
-        with:
-          github_token: ${{ secrets.GITHUB_TOKEN }}
-          github_repository: ${{ github.repository }} # Repository name
-          github_pr_number: ${{ github.event.number }} # Pull request number
-          config_file_path: ".github/pull-request-size.yml" # Path to pr-size-labeler config

.github/workflows/pr-size-labeler.yml

@@ -0,0 +1,26 @@
+name: Label PRs by size
+
+on:
+  pull_request:
+    branches:
+      - "main"
+
+jobs:
+  # Docs: https://github.com/cbrgm/pr-size-labeler-action
+  label-by-size:
+    # do not run on forks
+    if: github.repository == 'mdn/content'
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+        with:
+          persist-credentials: false
+
+      - name: Label PR based on size
+        uses: cbrgm/pr-size-labeler-action@main
+        with:
+          github_token: ${{ secrets.GITHUB_TOKEN }}
+          github_repository: ${{ github.repository }} # Repository name
+          github_pr_number: ${{ github.event.number }} # Pull request number
+          config_file_path: ".github/pr-labels-by-size.yml" # Path to pr-size-labeler config