set warning upload artifacts when check-artifact step return error (#6286)

related to issue: pytorch/executorch#8125

example run:
https://github.com/pytorch/executorch/actions/runs/13275229180/job/37063477575


Set defult warning for missing artifact

![image](https://github.com/user-attachments/assets/f627f63e-a960-4cf1-ad78-57ce91a06447)

add test for no artifacts

Author: yangw-dev

.github/workflows/linux_job.yml

@@ -306,8 +306,6 @@ jobs:
             if [[ -d "artifacts-to-be-uploaded" ]]; then
               mv -v artifacts-to-be-uploaded/* "${RUNNER_ARTIFACT_DIR}/"
             fi
-            # Set to fail upload step if there are no files for upload and expected files for upload
-            echo 'if-no-files-found=error' >> "${GITHUB_OUTPUT}"
           fi
 
           upload_docs=0
@@ -328,7 +326,6 @@ jobs:
         with:
           name: ${{ inputs.upload-artifact }}
           path: ${{ runner.temp }}/artifacts/
-          if-no-files-found: ${{ steps.check-artifacts.outputs.if-no-files-found }}
 
       # NB: This only works with our AWS runners
       - name: Upload artifacts to S3 (if any)
@@ -339,7 +336,6 @@ jobs:
           s3-bucket: gha-artifacts
           s3-prefix: |
             ${{ env.REPOSITORY }}/${{ github.run_id }}/artifacts
-          if-no-files-found: ${{ steps.check-artifacts.outputs.if-no-files-found }}
           path: ${{ runner.temp }}/artifacts/
 
       - name: Upload documentation to S3 (if any)

.github/workflows/linux_job_v2.yml

@@ -306,8 +306,6 @@ jobs:
             if [[ -d "artifacts-to-be-uploaded" ]]; then
               mv -v artifacts-to-be-uploaded/* "${RUNNER_ARTIFACT_DIR}/"
             fi
-            # Set to fail upload step if there are no files for upload and expected files for upload
-            echo 'if-no-files-found=error' >> "${GITHUB_OUTPUT}"
           fi
 
           upload_docs=0
@@ -328,7 +326,6 @@ jobs:
         with:
           name: ${{ inputs.upload-artifact }}
           path: ${{ runner.temp }}/artifacts/
-          if-no-files-found: ${{ steps.check-artifacts.outputs.if-no-files-found }}
 
       # NB: This only works with our AWS runners
       - name: Upload artifacts to S3 (if any)
@@ -339,7 +336,6 @@ jobs:
           s3-bucket: gha-artifacts
           s3-prefix: |
             ${{ env.REPOSITORY }}/${{ github.run_id }}/artifacts
-          if-no-files-found: ${{ steps.check-artifacts.outputs.if-no-files-found }}
           path: ${{ runner.temp }}/artifacts/
 
       - name: Upload documentation to S3 (if any)

.github/workflows/test_linux_job.yml

@@ -117,6 +117,15 @@ jobs:
       upload-artifact: my-cool-artifact
       script: |
         echo "hello" > "${RUNNER_ARTIFACT_DIR}/cool_beans"
+  test-upload-artifact-no-artifact:
+    uses: ./.github/workflows/linux_job.yml
+    with:
+      runner: linux.2xlarge
+      test-infra-repository: ${{ github.repository }}
+      test-infra-ref: ${{ github.ref }}
+      upload-artifact: my-cool-artifact
+      script: |
+        echo "hello"
   test-upload-artifact-s3:
     uses: ./.github/workflows/linux_job.yml
     with:
@@ -127,6 +136,16 @@ jobs:
       upload-artifact-to-s3: true
       script: |
         echo "hello" > "${RUNNER_ARTIFACT_DIR}/cool_beans"
+  test-upload-artifact-s3-no-artifact:
+    uses: ./.github/workflows/linux_job.yml
+    with:
+      runner: linux.2xlarge
+      test-infra-repository: ${{ github.repository }}
+      test-infra-ref: ${{ github.ref }}
+      upload-artifact: my-cool-artifact
+      upload-artifact-to-s3: true
+      script: |
+        echo "hello"
   test-download-artifact:
     needs: test-upload-artifact
     uses: ./.github/workflows/linux_job.yml

.github/workflows/test_linux_job_v2.yml

@@ -102,6 +102,17 @@ jobs:
       upload-artifact: my-cool-artifact
       script: |
         echo "hello" > "${RUNNER_ARTIFACT_DIR}/cool_beans"
+  test-upload-artifact-no-artifact:
+    uses: ./.github/workflows/linux_job_v2.yml
+    permissions:
+      id-token: write
+    with:
+      runner: linux.2xlarge
+      test-infra-repository: ${{ github.repository }}
+      test-infra-ref: ${{ github.ref }}
+      upload-artifact: my-cool-artifact
+      script: |
+        echo "hello"
   test-upload-artifact-s3:
     uses: ./.github/workflows/linux_job_v2.yml
     permissions:
@@ -114,6 +125,18 @@ jobs:
       upload-artifact-to-s3: true
       script: |
         echo "hello" > "${RUNNER_ARTIFACT_DIR}/cool_beans"
+  test-upload-artifact-s3-no-artifact:
+    uses: ./.github/workflows/linux_job_v2.yml
+    permissions:
+      id-token: write
+    with:
+      runner: linux.2xlarge
+      test-infra-repository: ${{ github.repository }}
+      test-infra-ref: ${{ github.ref }}
+      upload-artifact: my-cool-artifact
+      upload-artifact-to-s3: true
+      script: |
+        echo "hello"
   test-download-artifact:
     needs: test-upload-artifact
     uses: ./.github/workflows/linux_job_v2.yml