Add FilterVarRule test for FILTER_FLAG_GLOBAL_RANGE on PHP 8.5+

Ensures FILTER_FLAG_GLOBAL_RANGE|FILTER_NULL_ON_FAILURE does not falsely
trigger the "cannot use both" error on PHP 8.5+ where the constants have
distinct values.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: phpstan-bot

tests/PHPStan/Rules/Functions/FilterVarRuleTest.php

@@ -37,4 +37,10 @@ public function testRuleWithGlobalRange(): void
 		$this->analyse([__DIR__ . '/data/filter_var_null_and_throw_global_range.php'], []);
 	}
 
+	#[RequiresPhp('>= 8.5')]
+	public function testRuleGlobalRangePhp85(): void
+	{
+		$this->analyse([__DIR__ . '/data/filter_var_null_and_global_range_php85.php'], []);
+	}
+
 }

tests/PHPStan/Rules/Functions/data/filter_var_null_and_global_range_php85.php

@@ -0,0 +1,14 @@
+<?php // lint >= 8.5
+
+namespace FilterVarNullAndGlobalRangePhp85;
+
+filter_var('foo@bar.test', FILTER_VALIDATE_EMAIL, FILTER_FLAG_GLOBAL_RANGE|FILTER_NULL_ON_FAILURE);
+
+$flag = FILTER_NULL_ON_FAILURE|FILTER_FLAG_GLOBAL_RANGE;
+filter_var(100, FILTER_VALIDATE_INT, $flag);
+
+filter_var(
+	'johndoe',
+	FILTER_VALIDATE_REGEXP,
+	['options' => ['regexp' => '/^[a-z]+$/'], 'flags' => FILTER_FLAG_GLOBAL_RANGE|FILTER_NULL_ON_FAILURE]
+);