fix: attempt to improve package rename checks (#1997)

jadx-core/src/main/java/jadx/core/dex/info/ClassInfo.java

@@ -79,7 +79,7 @@ public final class ClassInfo implements Comparable<ClassInfo> {
 
 	public void changePkg(String aliasPkg) {
 		if (isInner()) {
-			throw new JadxRuntimeException("Can't change package for inner class");
+			throw new JadxRuntimeException("Can't change package for inner class: " + this);
 		}
 		if (!Objects.equals(getAliasPkg(), aliasPkg)) {
 			ClassAliasInfo newAlias = new ClassAliasInfo(aliasPkg, getAliasShortName());

jadx-core/src/main/java/jadx/core/dex/nodes/ClassNode.java

@@ -582,7 +582,7 @@ public class ClassNode extends NotificationAttrNode
 			clsInfo.changeShortName(newName);
 			return;
 		}
-		if (isInner()) {
+		if (clsInfo.isInner()) {
 			addWarn("Can't change package for inner class: " + this + " to " + newName);
 			return;
 		}
@@ -598,7 +598,7 @@ public class ClassNode extends NotificationAttrNode
 
 	private boolean changeClassNodePackage(String fullPkg) {
 		if (clsInfo.isInner()) {
-			throw new JadxRuntimeException("Can't change package for inner class");
+			throw new JadxRuntimeException("Can't change package for inner class: " + clsInfo);
 		}
 		if (fullPkg.equals(clsInfo.getAliasPkg())) {
 			return false;
@@ -618,7 +618,7 @@ public class ClassNode extends NotificationAttrNode
 
 	@Override
 	public void onParentPackageUpdate(PackageNode updatedPkg) {
-		if (isInner()) {
+		if (clsInfo.isInner()) {
 			return;
 		}
 		clsInfo.changePkg(packageNode.getAliasPkgInfo().getFullName());

jadx-core/src/main/java/jadx/core/dex/nodes/RootNode.java

@@ -313,7 +313,7 @@ public class RootNode {
 		}
 		classes.forEach(ClassNode::updateParentClass);
 		for (PackageNode pkg : packages) {
-			pkg.getClasses().removeIf(ClassNode::isInner);
+			pkg.getClasses().removeIf(cls -> cls.getClassInfo().isInner());
 		}
 	}