fix: enable "Add more..." unit hint for new users (#12565)

For new users, the `EnableRepoUnitHints` is set to false while I think that the original intent of #2221 was to set it to true (the migration set it to true for already existing users in `AddUserRepoUnitHintsSetting`).

This PR sets its to true upon user creation.

![screenshot showing the `Add more...` hint - from the original PR](https://codeberg.org/forgejo/forgejo/attachments/dc654ddd-e7cb-4667-b0d3-3fac39776be3)

Reviewed-on: https://codeberg.org/forgejo/forgejo/pulls/12565
Reviewed-by: limiting-factor <limiting-factor@noreply.codeberg.org>
Reviewed-by: 0ko <0ko@noreply.codeberg.org>

models/user/user.go

@@ -761,6 +761,7 @@ func createUser(ctx context.Context, u *User, createdByAdmin bool, overwriteDefa
 	u.Theme = setting.UI.DefaultTheme
 	u.IsRestricted = setting.Service.DefaultUserIsRestricted
 	u.IsActive = !setting.Service.RegisterEmailConfirm && !setting.Service.RegisterManualConfirm
+	u.EnableRepoUnitHints = true
 
 	// Ensure consistency of the dates.
 	if u.UpdatedUnix < u.CreatedUnix {

tests/integration/signup_test.go

@@ -36,6 +36,10 @@ func TestSignup(t *testing.T) {
 	// should be able to view new user's page
 	req = NewRequest(t, "GET", "/exampleUser")
 	MakeRequest(t, req, http.StatusOK)
+
+	// check default values
+	user := unittest.AssertExistsAndLoadBean(t, &user_model.User{Name: "exampleUser"})
+	assert.True(t, user.EnableRepoUnitHints)
 }
 
 func TestSignupAsRestricted(t *testing.T) {