Fix test data: dynamic owner check and missing PR number

- issue-1195: compare env.variable against github.repository_owner
  instead of hardcoded 'actions-oss'
- pull-request: add missing "number" field to event.json to prevent
  %!f(<nil>) in github.ref

Co-Authored-By: Claude Opus 4.6 <[email protected]>

pkg/runner/testdata/issue-1195/push.yml

@@ -10,4 +10,4 @@ jobs:
       - name: print env.variable
         run: |
           echo ${{ env.variable }}
-          exit ${{ (env.variable == 'actions-oss') && '0' || '1'}}
+          exit ${{ (env.variable == github.repository_owner) && '0' || '1'}}

pkg/runner/testdata/pull-request/event.json

@@ -1,4 +1,5 @@
 {
+  "number": 1,
   "pull_request": {
     "head": {
       "ref": "sample-head-ref"