Specify ID in `TestAPITeam` (#22192)

- There have been [CI
failures](https://codeberg.org/forgejo/forgejo/issues/111) in this
specific test function. The code on itself looks good, the CI failures
are likely caused by not specifying any field in `TeamUser`, which might
have caused to unittest to return another `TeamUser` than the code
expects.

Co-authored-by: KN4CK3R <admin@oldschoolhack.me>

tests/integration/api_team_test.go

@@ -24,7 +24,7 @@ import (
 func TestAPITeam(t *testing.T) {
 	defer tests.PrepareTestEnv(t)()
 
-	teamUser := unittest.AssertExistsAndLoadBean(t, &organization.TeamUser{})
+	teamUser := unittest.AssertExistsAndLoadBean(t, &organization.TeamUser{ID: 1})
 	team := unittest.AssertExistsAndLoadBean(t, &organization.Team{ID: teamUser.TeamID})
 	user := unittest.AssertExistsAndLoadBean(t, &user_model.User{ID: teamUser.UID})