Matrix jobs are not grouped in the run graph when `name:` is set

[bircni]

Gitea Version

1.27.2

What happened?

The run graph collapses matrix legs into a single Matrix: <job-id> box only when Gitea
derived the job's display name itself. If the workflow sets name: on the job, the legs
are rendered as individual nodes and no grouping box appears — even when the supplied name
has exactly the same shape as the derived one.

Steps to reproduce

on: workflow_dispatch
jobs:
  derived:
    runs-on: ubuntu-latest
    strategy:
      matrix:
        leg: [one, two]
    steps:
      - run: echo "${{ matrix.leg }}"

  explicit:
    name: "explicit (${{ matrix.leg }})"   # same shape Gitea would generate
    runs-on: ubuntu-latest
    strategy:
      matrix:
        leg: [one, two]
    steps:
      - run: echo "${{ matrix.leg }}"

Dispatch it and open the run graph.

Actual

• derived → one box: Matrix: derived — 2 jobs completed / Show all jobs
• explicit → two separate nodes, explicit (one) and explicit (two), no grouping box

Expected

Both are matrix jobs and both should group. The legs share a job id in either case, and
setting name: is documented as controlling the display name, not the job's identity.
GitHub's UI groups matrix legs under the job regardless of whether name: is set.

How are you running Gitea?