Analysis: add LC testdata with current behaviour

compiler/testData/asJava/ultraLightClasses/jvmSyntheticForAccessors.fir.java

@@ -0,0 +1,18 @@
+public final class X /* X*/ {
+  private int v;
+
+  private int w;
+
+  @<error>()
+  public final int getV();//  getV()
+
+  @<error>()
+  public final void setW(int);//  setW(int)
+
+  public  X();//  .ctor()
+
+  public final int getW();//  getW()
+
+  public final void setV(int);//  setV(int)
+
+}