[PhpUnitBridge] Use 'total' for asserting deprecation count when a group is not defined

Author: lyrixx

Diff for: CHANGELOG.md

@@ -5,6 +5,7 @@ CHANGELOG
 ---
 
  * Add `ExpectUserDeprecationMessageTrait` with a polyfill of PHPUnit's `expectUserDeprecationMessage()`
+ * Use `total` for asserting deprecation count when a group is not defined
 
 6.4
 ---

Diff for: DeprecationErrorHandler/Configuration.php

@@ -96,7 +96,7 @@ private function __construct(array $thresholds = [], string $regex = '', array $
         }
         foreach ($groups as $group) {
             if (!isset($this->thresholds[$group])) {
-                $this->thresholds[$group] = 999999;
+                $this->thresholds[$group] = $this->thresholds['total'] ?? 999999;
             }
         }
         $this->regex = $regex;