Merge pull request #9003 from jdarwood007/3.0/fixes8994

[3.0] Fix PM logic for groups

Author: jdarwood007

Sources/PersonalMessage/PM.php

@@ -1295,7 +1295,15 @@ public static function send(array $recipients, string $subject, string $message,
 		}
 
 		// Load the groups that are allowed to read PMs.
-		$pmReadGroups = Group::getAllowedTo('pm_read');
+		$allGroups = Group::getAllWithPermissions('pm_read', null);
+
+		foreach ($allGroups as $k => $g) {
+			if ($g['pm_read'] === 1) {
+				$pmReadGroups['allowed'][] = $k;
+			} else {
+				$pmReadGroups['denied'][] = $k;
+			}
+		}
 
 		if (empty(Config::$modSettings['permission_enable_deny'])) {
 			$pmReadGroups['denied'] = [];