Flaky test `TestAPIViewPulls`

[silverwind]

https://github.com/go-gitea/gitea/actions/runs/5105373812/jobs/9176923331?pr=2496

--- FAIL: TestAPIViewPulls/APIGetPullFiles_5 (0.14s)
    api_pull_test.go:57: 
          Error Trace:  /home/runner/work/gitea/gitea/tests/integration/api_pull_test.go:57
                              /home/runner/work/gitea/gitea/tests/integration/api_pull_test.go:223
          Error:        Not equal: 
                        expected: "added"
                        actual  : "changed"
                        
                        Diff:
                        --- Expected
                        +++ Actual
                        @@ -1 +1 @@
                        -added
                        +changed
          Test:         TestAPIViewPulls/APIGetPullFiles_5

[silverwind]

Not flaky but a specific issue to #24966.