[GHA] Configurable event name for provider (openvinotoolkit#27035)

To test archives from pre-commits when needed

.github/actions/openvino_provider/action.yml

@@ -9,6 +9,11 @@ inputs:
     description: 'Branch of OpenVINO to take the revision from if no specific hash was provided. 
                   Taken from github context by default'
     required: false
+  event_name:
+    description: 'Even name from which artifacts were generated. "push" by default; overwrite it with "pull_request" 
+                  if revision/branch is from PR'
+    default: "push"
+    required: false
   ov_artifact_name:
     description: "Name under which to upload provided OpenVINO build artifacts, set automatically by default"
     required: false
@@ -107,7 +112,7 @@ runs:
       with:
         platform: ${{ inputs.platform }}_${{ inputs.arch }}
         storage_root: ${{ inputs.commit_share_path }}
-        event_name: "commit"
+        event_name: ${{ inputs.event_name }}
         trigger_repo_sha: ${{ env.OV_REVISION }}
         branch_name: ${{ inputs.branch_name }}
         to_restore: ${{ inputs.commit_packages_to_provide }}