[fixes #2624] Resolve variables in switch expressions

test/transform/resource/after-ecj/ValSwitchExpression.java

@@ -0,0 +1,16 @@
+// version 14:
+import lombok.val;
+public class ValSwitchExpression {
+  public ValSwitchExpression() {
+    super();
+  }
+  public void method(int arg) {
+    final @val int x =     switch (arg) {
+    default ->
+        {
+          final @val java.lang.String s = "string";
+          yield arg;
+        }
+    };
+  }
+}