Align PropertiesLauncher's close behavior with JarLauncher

Previously, PropertiesLauncher would close each archive that it
iterated over when creating its ClassLoader. This was not aligned
with JarLauncher's behaviour and left the ClassLoader with closed
archives. The close was introduced in [1] and became more apparent
following the change to fail operations on closed archives [2].

This commit updates Launcher to remove the close() that was added in
[1]. This aligns the behavior of PropertiesLauncher with JarLauncher
and ensures that the ClassLoader does not have entries backed by
closed archives on its classpath.

Fixes spring-projectsgh-23165

[1] spring-projects@ad72f86
[2] spring-projects@ed7a5db

spring-boot-project/spring-boot-tools/spring-boot-loader/src/main/java/org/springframework/boot/loader/Launcher.java

@@ -80,9 +80,7 @@ protected ClassLoader createClassLoader(List<Archive> archives) throws Exception
 	protected ClassLoader createClassLoader(Iterator<Archive> archives) throws Exception {
 		List<URL> urls = new ArrayList<>(50);
 		while (archives.hasNext()) {
-			Archive archive = archives.next();
-			urls.add(archive.getUrl());
-			archive.close();
+			urls.add(archives.next().getUrl());
 		}
 		return createClassLoader(urls.toArray(new URL[0]));
 	}

spring-boot-project/spring-boot-tools/spring-boot-loader/src/test/java/org/springframework/boot/loader/PropertiesLauncherTests.java

@@ -232,12 +232,13 @@ void testUserSpecifiedJarFileWithNestedArchives() throws Exception {
 
 	@Test
 	void testUserSpecifiedNestedJarPath() throws Exception {
-		System.setProperty("loader.path", "nested-jars/app.jar!/foo.jar");
+		System.setProperty("loader.path", "nested-jars/nested-jar-app.jar!/BOOT-INF/classes/");
 		System.setProperty("loader.main", "demo.Application");
 		this.launcher = new PropertiesLauncher();
-		List<Archive> archives = new ArrayList<>();
-		this.launcher.getClassPathArchivesIterator().forEachRemaining(archives::add);
-		assertThat(archives).hasSize(1).areExactly(1, endingWith("foo.jar!/"));
+		assertThat(ReflectionTestUtils.getField(this.launcher, "paths").toString())
+				.isEqualTo("[nested-jars/nested-jar-app.jar!/BOOT-INF/classes/]");
+		this.launcher.launch(new String[0]);
+		waitFor("Hello World");
 	}
 
 	@Test