Moved remaining case in LoadJavaCustomTest to generated one.

Supported multi-file cases.

compiler/testData/loadJava/compiledJava/PackageLocalVisibility.java

@@ -0,0 +1,21 @@
+// FILE: Frame.java
+package awt;
+
+public class Frame {
+
+    String accessibleContext = null;
+
+}
+
+// FILE: JFrame.java
+package test;
+
+import awt.Frame;
+
+public class JFrame extends Frame {
+    public JFrame() {
+    }
+
+    protected String accessibleContext = null;
+}
+

compiler/testData/loadJava/compiledJava/PackageLocalVisibility.txt

@@ -0,0 +1,6 @@
+package test
+
+public open class JFrame : awt.Frame {
+    public constructor JFrame()
+    protected/*protected and package*/ final var accessibleContext : jet.String?
+}