[CI] Disable executorch jobs (#159595)

The current executorch pin needs to be updated

The next time the docker image gets rebuilt, the executorch docker build is going to fail like https://github.com/pytorch/pytorch/actions/runs/16626853655/job/47137807966

The failure is that the pin uses a version of the nightly that has been removed from the nightly index
```
#62 72.30 ERROR: Could not find a version that satisfies the requirement torch==2.8.0.dev20250601 (from versions: 1.11.0, 1.12.0, 1.12.1, 1.13.0, 1.13.1, 2.0.0, 2.0.1, 2.1.0, 2.1.1, 2.1.2, 2.2.0, 2.2.1, 2.2.2, 2.3.0, 2.3.1, 2.4.0, 2.4.1, 2.5.0, 2.5.1, 2.6.0, 2.7.0, 2.7.1, 2.8.0.dev20250602+cpu, 2.8.0.dev20250603+cpu, 2.8.0.dev20250604+cpu, 2.8.0.dev20250605+cpu, 2.8.0.dev20250606+cpu, 2.8.0.dev20250607+cpu, 2.8.0.dev20250608+cpu, 2.8.0.dev20250609+cpu, 2.8.0.dev20250610+cpu, 2.8.0.dev20250611+cpu, 2.8.0.dev20250612+cpu, 2.8.0.dev20250613+cpu, 2.8.0.dev20250614+cpu, 2.8.0.dev20250615+cpu, 2.8.0.dev20250616+cpu, 2.8.0.dev20250617+cpu, 2.8.0.dev20250618+cpu, 2.8.0.dev20250619+cpu, 2.8.0.dev20250620+cpu, 2.8.0.dev20250621+cpu, 2.8.0.dev20250622+cpu, 2.8.0.dev20250623+cpu, 2.8.0.dev20250624+cpu, 2.8.0.dev20250625+cpu, 2.8.0.dev20250626+cpu, 2.8.0.dev20250627+cpu, 2.9.0.dev20250628+cpu, 2.9.0.dev20250629+cpu, 2.9.0.dev20250630+cpu, 2.9.0.dev20250701+cpu, 2.9.0.dev20250702+cpu, 2.9.0.dev20250703+cpu, 2.9.0.dev20250704+cpu, 2.9.0.dev20250705+cpu, 2.9.0.dev20250706+cpu, 2.9.0.dev20250707+cpu, 2.9.0.dev20250708+cpu, 2.9.0.dev20250709+cpu, 2.9.0.dev20250710+cpu, 2.9.0.dev20250711+cpu, 2.9.0.dev20250712+cpu, 2.9.0.dev20250713+cpu, 2.9.0.dev20250714+cpu, 2.9.0.dev20250715+cpu, 2.9.0.dev20250716+cpu, 2.9.0.dev20250717+cpu, 2.9.0.dev20250718+cpu, 2.9.0.dev20250719+cpu, 2.9.0.dev20250720+cpu, 2.9.0.dev20250722+cpu, 2.9.0.dev20250723+cpu, 2.9.0.dev20250724+cpu, 2.9.0.dev20250725+cpu, 2.9.0.dev20250726+cpu, 2.9.0.dev20250727+cpu, 2.9.0.dev20250728+cpu, 2.9.0.dev20250729+cpu, 2.9.0.dev20250730+cpu, 2.9.0.dev20250731+cpu)
#62 72.30 ERROR: No matching distribution found for torch==2.8.0.dev20250601
```

The executorch hash update currently fails due to https://github.com/pytorch/pytorch/actions/runs/16636773244/job/47079169392
```
2025-07-31T01:56:57.0249165Z + echo 'expecting triton to not be installed, but it is'
2025-07-31T01:56:57.0249614Z expecting triton to not be installed, but it is
2025-07-31T01:56:57.0249969Z + exit 1
2025-07-31T01:58:27.6764352Z ##[error]Final attempt failed. Child_process exited with error code 1
```
I believe the cause is https://github.com/pytorch/executorch/pull/11653 where the nightly pytorch is installed from our index, but then requirements-examples installs timm from pypi, which reinstalls pytorch, except its the release build for cuda from pypi?  Which then causes triton to be installed.

I don't know what the intended behavior is so I'm disabling the executorch docker build, executorch build, and the nightly hash update, and apparently the test was already disabled because it was failing
Pull Request resolved: https://github.com/pytorch/pytorch/pull/159595
Approved by: https://github.com/malfet

.github/workflows/docker-builds.yml

@@ -76,7 +76,8 @@ jobs:
           pytorch-linux-jammy-py3-clang12-onnx,
           pytorch-linux-jammy-linter,
           pytorch-linux-jammy-cuda12.8-cudnn9-py3.9-linter,
-          pytorch-linux-jammy-py3-clang12-executorch,
+          # Executorch pin needs update
+          # pytorch-linux-jammy-py3-clang12-executorch,
           pytorch-linux-jammy-py3.12-triton-cpu
         ]
         include:

.github/workflows/nightly.yml

@@ -75,10 +75,11 @@ jobs:
             repo-owner: pytorch
             branch: main
             pin-folder: .github/ci_commit_pins
-          - repo-name: executorch
+          # executorch jobs are disabled since it needs some manual work for the hash update
-            repo-owner: pytorch
+          # - repo-name: executorch
-            branch: main
+          #   repo-owner: pytorch
-            pin-folder: .ci/docker/ci_commit_pins
+          #   branch: main
+          #   pin-folder: .ci/docker/ci_commit_pins
           - repo-name: triton
             repo-owner: triton-lang
             branch: main

.github/workflows/pull.yml

@@ -434,6 +434,7 @@ jobs:
     secrets: inherit
 
   linux-jammy-py3-clang12-executorch-build:
+    if: false  # Docker build needs pin update
     name: linux-jammy-py3-clang12-executorch
     uses: ./.github/workflows/_linux-build.yml
     needs: get-label-type