[Release|CI/CD] Revert using larger runners only for the polkadot-parachain and polkadot-omni-node builds

.github/workflows/release-reusable-rc-build.yml

@@ -42,32 +42,20 @@ jobs:
     # However, env variables don't work for forks: https://github.com/orgs/community/discussions/44322
     # This workaround sets the container image for each job using 'set-image' job output.
     runs-on: ubuntu-latest
-    env:
-      BINARY: ${{ inputs.binary }}
     outputs:
       IMAGE: ${{ steps.set_image.outputs.IMAGE }}
-      RUNNER: ${{ steps.set_image.outputs.RUNNER }}
     steps:
       - name: Checkout
         uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
 
       - id: set_image
-        run: |
-          cat .github/env >> $GITHUB_OUTPUT
-          RUNNER=""
-          if [[ "${BINARY}" =~ "polkadot-parachain" || "${BINARY}" =~ "polkadot-omni-node" ]]; then
-            RUNNER="ubuntu-latest-m"
-            echo "Using ubuntu-latest-m runner"
-          else
-            RUNNER="ubuntu-latest"
-            echo "Using ubuntu-latest runner"
-          fi
-          echo "RUNNER=${RUNNER}" >> $GITHUB_OUTPUT
+        run: cat .github/env >> $GITHUB_OUTPUT
+
 
   build-rc:
     if: ${{ inputs.target == 'x86_64-unknown-linux-gnu' }}
     needs: [set-image]
-    runs-on: ${{ needs.set-image.outputs.RUNNER }}
+    runs-on: ubuntu-latest-m
     environment: release
     container:
       image: ${{ needs.set-image.outputs.IMAGE }}