Fix phpstan/phpstan#12430: Skip path validation for baseline entries

- Baseline entries (identified by having a 'count' key) with paths to
  deleted/renamed files caused "is neither a directory, nor a file path,
  nor a fnmatch pattern" errors during container initialization
- The message validation already skipped baseline entries but the path
  validation did not
- Added the same 'count' check to skip baseline entries in the path
  validation loop in ValidateIgnoredErrorsExtension

Author: VincentLanglet

src/DependencyInjection/ValidateIgnoredErrorsExtension.php

@@ -177,6 +177,10 @@ public function getRegistry(): UnaryOperatorTypeSpecifyingExtensionRegistry
 						continue;
 					}
 
+					if (isset($ignoreError['count'])) {
+						continue; // ignoreError coming from baseline will be validated at runtime
+					}
+
 					if (isset($ignoreError['path'])) {
 						if (!is_string($ignoreError['path'])) {
 							$errors[] = sprintf("Key 'path' of ignoreErrors expects a string, %s given. Did you mean 'paths'?", gettype($ignoreError['path']));

tests/PHPStan/DependencyInjection/InvalidIgnoredErrorExceptionTest.php

@@ -73,6 +73,13 @@ public function testValidateIgnoreErrors(string $file, string $expectedMessage):
 		self::getContainer();
 	}
 
+	public function testBug12430(): void
+	{
+		self::$configFile = __DIR__ . '/invalidIgnoreErrors/baseline-nonexistent-path.neon';
+		$this->expectNotToPerformAssertions();
+		self::getContainer();
+	}
+
 	public static function getAdditionalConfigFiles(): array
 	{
 		$files = [

tests/PHPStan/DependencyInjection/invalidIgnoreErrors/baseline-nonexistent-path.neon

@@ -0,0 +1,6 @@
+parameters:
+	ignoreErrors:
+		-
+			message: '#Some error#'
+			count: 1
+			path: /nonexistent/path/to/deleted/file.php