[kotlin] J2K: ConvertGettersAndSettersToPropertyProcessing: clarify test

Now, if the setter in this test is merged into a property,
the test will fail with a "type mismatch" error for `takesString` function.

GitOrigin-RevId: 1449f3e34994b17f1c6b7235d4f0758213b033d9

plugins/kotlin/j2k/new/tests/testData/newJ2k/detectProperties/SetterTypeNotMatch.java

@@ -6,6 +6,9 @@ class A {
     }
 
     public void setValue(String s) {
+        takesString(s);
         o = s;
     }
+
+    private void takesString(String s) {}
 }

plugins/kotlin/j2k/new/tests/testData/newJ2k/detectProperties/SetterTypeNotMatch.kt

@@ -2,7 +2,10 @@ internal class A {
     var value: Any? = null
         private set
 
-    fun setValue(s: String?) {
+    fun setValue(s: String) {
+        takesString(s)
         value = s
     }
+
+    private fun takesString(s: String) {}
 }