update benchmark scripts

Author: bratpiorka

.github/workflows/reusable_benchmarks.yml

@@ -2,22 +2,9 @@
 # for results visualization from intel/llvm (unified-runtime dir).
 name: Benchmarks
 
+# testing only
 on:
-  workflow_call:
-    inputs:
-      pr_no:
-        # even though this is a number, this is a workaround for issues with
-        # reusable workflow calls that result in "Unexpected value '0'" error.
-        type: string
-        default: '0'
-      bench_script_params:
-        required: false
-        type: string
-        default: ''
-      upload_report:
-        required: false
-        type: boolean
-        default: false
+  pull_request:
 
 permissions:
   contents: read
@@ -103,7 +90,8 @@ jobs:
       uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
       with:
         repository: intel/llvm
-        ref: nightly-2025-02-19
+        # add preloaded UMF benchmarks (#17278)
+        ref: b2f9dab5266d227cc9eb19af1b54c5bdc50221d1
         path: sycl-repo
         fetch-depth: 1