Revert ARC jobs to run on classic infra again (#124748)

ARC jobs are too unstable right now.

We're going to mitigate this by:
1. Reverting ARC jobs to run on the classic infra (this PR)
2. Spin up new jobs in parallel, marked as unstable, to run on the new infra. (coming soon)

More details in https://github.com/pytorch/ci-infra/issues/149
Pull Request resolved: https://github.com/pytorch/pytorch/pull/124748
Approved by: https://github.com/seemethere, https://github.com/zxiiro, https://github.com/malfet, https://github.com/jeanschmidt
diff --git a/.github/workflows/pull.yml b/.github/workflows/pull.yml
index 8f54248..713e454 100644
--- a/.github/workflows/pull.yml
+++ b/.github/workflows/pull.yml
@@ -37,7 +37,7 @@
 
   linux-jammy-py3_8-gcc11-build:
     name: linux-jammy-py3.8-gcc11
-    uses: ./.github/workflows/_linux-build-rg.yml
+    uses: ./.github/workflows/_linux-build-label.yml
     with:
       build-environment: linux-jammy-py3.8-gcc11
       docker-image-name: pytorch-linux-jammy-py3.8-gcc11
@@ -74,7 +74,7 @@
 
   linux-jammy-py3_8-gcc11-no-ops:
     name: linux-jammy-py3.8-gcc11-no-ops
-    uses: ./.github/workflows/_linux-build-rg.yml
+    uses: ./.github/workflows/_linux-build-label.yml
     with:
       build-environment: linux-jammy-py3.8-gcc11-no-ops
       docker-image-name: pytorch-linux-jammy-py3.8-gcc11
@@ -85,7 +85,7 @@
 
   linux-jammy-py3_8-gcc11-pch:
     name: linux-jammy-py3.8-gcc11-pch
-    uses: ./.github/workflows/_linux-build-rg.yml
+    uses: ./.github/workflows/_linux-build-label.yml
     with:
       build-environment: linux-jammy-py3.8-gcc11-pch
       docker-image-name: pytorch-linux-jammy-py3.8-gcc11
@@ -96,7 +96,7 @@
 
   linux-jammy-py3_10-clang15-asan-build:
     name: linux-jammy-py3.10-clang15-asan
-    uses: ./.github/workflows/_linux-build-rg.yml
+    uses: ./.github/workflows/_linux-build-label.yml
     with:
       build-environment: linux-jammy-py3.10-clang15-asan
       docker-image-name: pytorch-linux-jammy-py3-clang15-asan
@@ -125,7 +125,7 @@
 
   linux-focal-py3_8-clang10-onnx-build:
     name: linux-focal-py3.8-clang10-onnx
-    uses: ./.github/workflows/_linux-build-rg.yml
+    uses: ./.github/workflows/_linux-build-label.yml
     with:
       build-environment: linux-focal-py3.8-clang10-onnx
       docker-image-name: pytorch-linux-focal-py3-clang10-onnx
@@ -148,7 +148,7 @@
 
   linux-focal-py3_8-clang10-build:
     name: linux-focal-py3.8-clang10
-    uses: ./.github/workflows/_linux-build-rg.yml
+    uses: ./.github/workflows/_linux-build-label.yml
     with:
       build-environment: linux-focal-py3.8-clang10
       docker-image-name: pytorch-linux-focal-py3.8-clang10
@@ -177,7 +177,7 @@
 
   linux-focal-py3_11-clang10-build:
     name: linux-focal-py3.11-clang10
-    uses: ./.github/workflows/_linux-build-rg.yml
+    uses: ./.github/workflows/_linux-build-label.yml
     with:
       build-environment: linux-focal-py3.11-clang10
       docker-image-name: pytorch-linux-focal-py3.11-clang10
diff --git a/.github/workflows/slow.yml b/.github/workflows/slow.yml
index 56a45a5..85e9b51 100644
--- a/.github/workflows/slow.yml
+++ b/.github/workflows/slow.yml
@@ -138,7 +138,7 @@
 
   linux-jammy-py3_10-clang15-asan-build:
     name: linux-jammy-py3.10-clang15-asan
-    uses: ./.github/workflows/_linux-build-rg.yml
+    uses: ./.github/workflows/_linux-build-label.yml
     with:
       build-environment: linux-jammy-py3.10-clang15-asan
       docker-image-name: pytorch-linux-jammy-py3-clang15-asan