Fix GenericApplicationContextTests on Microsoft Windows (round 2)

The previous change to the tests resulted in a failure on Windows when
using the DefaultResourceLoader by expecting an exception when no
exception is thrown.

This commit narrows the scope of the if-clause to expect an exception
only when using the FileSystemResourceLoader on Windows.

See gh-28703, gh-28746

Author: sbrannen

spring-context/src/test/java/org/springframework/context/support/GenericApplicationContextTests.java

@@ -249,9 +249,13 @@ private void assertGetResourceSemantics(ResourceLoader resourceLoader, Class<? e
 		resource = context.getResource(fileLocation);
 		assertThat(resource).isInstanceOf(FileUrlResource.class);
 
-		if (OS.WINDOWS.isCurrentOs()) {
-			// On Windows we expect an error similar to the following.
-			// java.nio.file.InvalidPathException: Illegal char <:> at index 4: ping:foo
+		// If we are using a FileSystemResourceLoader on Windows, we expect an error
+		// similar to the following since "ping:foo" is not a valid file name in the
+		// Windows file system and since the PingPongProtocolResolver has not yet been
+		// registered.
+		//
+		// java.nio.file.InvalidPathException: Illegal char <:> at index 4: ping:foo
+		if (resourceLoader instanceof FileSystemResourceLoader && OS.WINDOWS.isCurrentOs()) {
 			assertThatExceptionOfType(InvalidPathException.class)
 				.isThrownBy(() -> context.getResource(pingLocation))
 				.withMessageContaining(pingLocation);