#6946 Run hooks on merge/edit and cope with protected branches (#6961)

* Fix #6946 by checking PullRequest ID on pushing

* Ensure we have the owner name, the pr attributes and the the issue

* Fix TestSearchRepo by waiting till indexing is done

* Update integrations/repo_search_test.go

* changes as per @mrsdizzie

* missing comma

* Spelling mistake

* Fix full pushing environment

models/branches.go

@@ -19,6 +19,8 @@ import (
 const (
 	// ProtectedBranchRepoID protected Repo ID
 	ProtectedBranchRepoID = "GITEA_REPO_ID"
+	// ProtectedBranchPRID protected Repo PR ID
+	ProtectedBranchPRID = "GITEA_PR_ID"
 )
 
 // ProtectedBranch struct