Add failing test for JavaSourceSet#gavFromPath on TypeTable jar paths

After #7528 TypeTable now materializes artifacts as jars at
~/.rewrite/classpath/.tt/<group>/<artifact>/<version>/<artifact>-<version>.jar
instead of as a classes directory. JavaSourceSet#gavFromPath was written
against the older directory layout and now produces a malformed GAV for
the jar layout, breaking recipes that key off JavaSourceSet#getGavToTypes.

Author: steve-aom-elliott

rewrite-java/src/test/java/org/openrewrite/java/marker/JavaSourceSetTest.java

@@ -21,6 +21,7 @@
 
 import java.nio.file.Files;
 import java.nio.file.Path;
+import java.nio.file.Paths;
 import java.util.List;
 import java.util.jar.JarEntry;
 import java.util.jar.JarOutputStream;
@@ -71,4 +72,28 @@ private static void writeEntry(JarOutputStream jos, String name, byte[] content)
         jos.write(content);
         jos.closeEntry();
     }
+
+    @Test
+    void gavFromTypeTableClassesDirPath() {
+        Path p = Paths.get(System.getProperty("user.home"),
+          ".rewrite/classpath/.tt/org/junit/jupiter/junit-jupiter-api/6.0.2");
+        assertThat(JavaSourceSet.gavFromPath(p))
+          .isEqualTo("org.junit.jupiter:junit-jupiter-api:6.0.2");
+    }
+
+    @Test
+    void gavFromTypeTableJarPath() {
+        Path p = Paths.get(System.getProperty("user.home"),
+          ".rewrite/classpath/.tt/org/junit/jupiter/junit-jupiter-api/6.0.2/junit-jupiter-api-6.0.2.jar");
+        assertThat(JavaSourceSet.gavFromPath(p))
+          .isEqualTo("org.junit.jupiter:junit-jupiter-api:6.0.2");
+    }
+
+    @Test
+    void gavFromGradleCachePath() {
+        Path p = Paths.get(System.getProperty("user.home"),
+          ".gradle/caches/modules-2/files-2.1/org.openrewrite/rewrite-core/8.32.0/64ddcc371f1bf29593b4b27e907757d5554d1a83/rewrite-core-8.32.0.jar");
+        assertThat(JavaSourceSet.gavFromPath(p))
+          .isEqualTo("org.openrewrite:rewrite-core:8.32.0");
+    }
 }