ci: drop display name from meta-2 job so check reports as job id (#3)

Branch protection on main requires a check called "meta-2" (the job id),
but the workflow's `name: META-2 source/test separation` was overriding
the displayed check name, so the protection rule waited forever for a
status that never reported under that name. Dropping the name field
makes GitHub use the job id as the check name, matching the protection
rule.

The `test` job already has no name field and reports correctly as "test".

Pure workflow fix. No semantic change to the check's behaviour.

Same fix landed on chbrain/khai via #4 (mvp/khai-2-specs branch).

Author: ChBrain

.github/workflows/ci.yml

@@ -24,7 +24,6 @@ jobs:
         run: npm test
 
   meta-2:
-    name: META-2 source/test separation
     runs-on: ubuntu-latest
     if: github.event_name == 'pull_request'
     steps: