[SLC] implement lazy calculation for modifiers

and fix some annotations

^KTIJ-23783 Fixed

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

@@ -3,12 +3,6 @@ public final class X /* X*/ {
 
   private int w = 1 /* initializer type: int */;
 
-  @kotlin.jvm.JvmSynthetic()
-  public final int getV();//  getV()
-
-  @kotlin.jvm.JvmSynthetic()
-  public final void setW(int);//  setW(int)
-
   public  X();//  .ctor()
 
   public final int getW();//  getW()