JVM: restore incorrect DFS logic in JavaModuleGraph for compatibility

The problem is tracked in KT-66622. It should be fixed later, with a
proper deprecation, because otherwise it can potentially break a lot of
code.

compiler/testData/javaModules/namedDoesNotReadAutomaticWithUnrelatedNamed/unrelated/module-info.java

@@ -0,0 +1,3 @@
+module unrelated {
+    exports unrelated;
+}

compiler/testData/javaModules/namedDoesNotReadAutomaticWithUnrelatedNamed/unrelated/unrelated/Unrelated.java

@@ -0,0 +1,3 @@
+package unrelated;
+
+public class Unrelated {}