Fix DefaultStubFilesProvider

Author: ondrejmirtes

src/PhpDoc/DefaultStubFilesProvider.php

@@ -8,6 +8,7 @@
 use PHPStan\File\FileHelper;
 use PHPStan\Internal\ComposerHelper;
 use function array_filter;
+use function array_map;
 use function array_values;
 use function str_contains;
 
@@ -42,7 +43,7 @@ public function getStubFiles(): array
 			return $this->cachedFiles;
 		}
 
-		$files = $this->stubFiles;
+		$files = array_map(fn ($path) => $this->fileHelper->normalizePath($path), $this->stubFiles);
 		$extensions = $this->container->getServicesByTag(StubFilesExtension::EXTENSION_TAG);
 		foreach ($extensions as $extension) {
 			foreach ($extension->getFiles() as $extensionFile) {

tests/PHPStan/PhpDoc/DefaultStubFilesProviderTest.php

@@ -43,6 +43,9 @@ public function testGetProjectStubFilesWhenPathContainsWindowsSeparator(): void
 		$projectStubFiles = $defaultStubFilesProvider->getProjectStubFiles();
 		$this->assertContains('/projectStub.stub', $projectStubFiles);
 		$this->assertNotContains($thirdPartyStubFile, $projectStubFiles);
+
+		$fileHelper = new FileHelper(__DIR__);
+		$this->assertNotContains($fileHelper->normalizePath($thirdPartyStubFile), $projectStubFiles);
 	}
 
 	/**