Automatically remove Watches, Assignments, etc if user loses access due to being removed as collaborator or from a team (#10997)

* remove a user from being assigned to any issue/PR if (s)he is removed as a collaborator

* fix gender specific comment

* do not remove users that still have access to the repo if they are a member of a team that can access the repo

* add context to errors

* updates

* incorporate review fixes

* Update models/repo_collaboration.go

Co-Authored-By: 6543 <6543@obermui.de>

* Update models/repo_collaboration.go

Co-Authored-By: 6543 <6543@obermui.de>

* Fix Rebase Relict

* Fix & Impruve

* use xorm builder

* all in one session

* generalize reconsiderIssueAssignees

* Only Unwatch if have no access anymore

* prepare for reuse

* Same things if remove User from Team

* fix lint

* let mysql take time to react

* add description

* CI.restart()

* CI.restart()

Co-authored-by: Lanre Adelowo <yo@lanre.wtf>
Co-authored-by: techknowlogick <matti@mdranta.net>
Co-authored-by: Lauris BH <lauris@nix.lv>

integrations/release_test.go

@@ -8,6 +8,7 @@ import (
 	"fmt"
 	"net/http"
 	"testing"
+	"time"
 
 	"code.gitea.io/gitea/modules/test"
 
@@ -63,6 +64,9 @@ func TestViewReleases(t *testing.T) {
 	session := loginUser(t, "user2")
 	req := NewRequest(t, "GET", "/user2/repo1/releases")
 	session.MakeRequest(t, req, http.StatusOK)
+
+	// if CI is to slow this test fail, so lets wait a bit
+	time.Sleep(time.Millisecond * 100)
 }
 
 func TestViewReleasesNoLogin(t *testing.T) {