fix: repo home page 500 due to the timeout of "get last commit info" (#38678)

Regression of the ctx removal from "git.Repository" struct (the old code
was already wrong and can still cause 500, the "ctx removal" just makes
the problem easier to reproduce).

Merge duplicate code.

Reviewd by codex: no actionable findings.

modules/git/commit_info_test.go

@@ -105,8 +105,7 @@ func testGetCommitsInfo(t *testing.T, repo1 *Repository) {
 			continue
 		}
 
-		// FIXME: Context.TODO() - if graceful has started we should use its Shutdown context otherwise use install signals in TestMain.
-		commitsInfo, treeCommit, err := entries.GetCommitsInfo(t.Context(), "/any/repo-link", repo1, commit, testCase.Path)
+		commitsInfo, treeCommit, err := entries.GetCommitsInfo(t.Context(), time.Second, "/any/repo-link", repo1, commit, testCase.Path)
 		assert.NoError(t, err, "Unable to get commit information for entries of subtree: %s in commit: %s from testcase due to error: %v", testCase.Path, testCase.CommitID, err)
 		if err != nil {
 			t.FailNow()