Fix cmd tests by mocking builtin paths (#37369)

After 07ada3666b, PrepareConsoleLoggerLevel can fail in tests when
InstallLock is true, due to the incorrect config file is loaded. This PR
fixes cmd test setup by mocking builtin paths

Fixes #37368

---------

Co-authored-by: Morgan PEYRE <morgan.peyre@brickcode.tech>
Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>

tests/integration/migration-test/migration_test.go

@@ -37,7 +37,7 @@ var currentEngine *xorm.Engine
 
 func initMigrationTest(t *testing.T) func() {
 	testlogger.Init()
-	unittest.InitSettingsForTesting()
+	setting.SetupGiteaTestEnv()
 
 	assert.NotEmpty(t, setting.RepoRootPath)
 	assert.NoError(t, unittest.SyncDirs(filepath.Join(filepath.Dir(setting.AppPath), "tests/gitea-repositories-meta"), setting.RepoRootPath))