Use PreferGenericTemplateOnSameUnionTypeRule from symplify/phpstan-rules (#8639)

Author: TomasVotruba

composer.json

@@ -52,7 +52,7 @@
         "shipmonk/dead-code-detector": "^1.4",
         "symfony/process": "^8.1",
         "symplify/easy-coding-standard": "^13.3.5",
-        "symplify/phpstan-rules": "^14.18",
+        "symplify/phpstan-rules": "^14.18.2",
         "tomasvotruba/class-leak": "^2.3.4",
         "tomasvotruba/fast-unit": "^0.1",
         "tomasvotruba/type-coverage": "^2.3.6",

phpstan.neon

@@ -4,7 +4,6 @@ includes:
 rules:
     - Rector\Utils\PHPStan\Rule\RegisterRelatedPolyfillRectorRule
     - Rector\Utils\PHPStan\Rule\NoScopeFetchBeforeCheapGuardRule
-    - Rector\Utils\PHPStan\Rule\PreferGenericTemplateOnSameUnionTypeRule
     - Rector\Utils\PHPStan\Rule\NarrowReturnToUnionParamRule
 
 parameters: