chore: Rename validate step (#4969)

This is to bypass branch protection rules

.github/workflows/build_doc_prs.yaml

@@ -7,6 +7,7 @@ on:
 
 jobs:
   validate:
+    name: build (18.x) # temporary solution to trick branch protection rules
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
@@ -23,12 +24,3 @@ jobs:
           sed -i 's/chalk\(\w\|\.\)\+//g' node_modules/@docusaurus/core/lib/client/serverEntry.js
           echo "Chalk removed"
           yarn build
-  build:
-    runs-on: ubuntu-latest
-    name: build
-
-    strategy:
-      matrix:
-        node-version: [18.x]
-    steps:
-      - run: echo "Fake build step for docs only PRs"