MM-25078: local mode for createUserAccessToken, revokeUserAccessToken and getUserAccessTokensForUser (#14680)

Summary
- local mode for createUserAccessToken
- local mode for revokeUserAccessToken
- local mode for getUserAccessTokensForUser, also removed a duplicate test.

Ticket Link
- https://mattermost.atlassian.net/browse/MM-25078
- https://mattermost.atlassian.net/browse/MM-25079
- https://mattermost.atlassian.net/browse/MM-25080

app/authorization.go

@@ -108,6 +108,9 @@ func (a *App) SessionHasPermissionToUser(session model.Session, userId string) b
 }
 
 func (a *App) SessionHasPermissionToUserOrBot(session model.Session, userId string) bool {
+	if session.IsUnrestricted() {
+		return true
+	}
 	if a.SessionHasPermissionToUser(session, userId) {
 		return true
 	}