[IR] Split const folding into necessary one and for optimizations only

In this commit we have a lot of change in test data. This was caused
by the way where we evaluate constants. We split constant evaluation
into two distinct parts: only necessary evaluations for `fir2ir`
(like const val and annotations) and optimizations for lowering.
Now we don't do all constant evaluation on `fir2ir`, but IR
dump is executed after this phase, so test data changed.

#KT-58923

compiler/testData/ir/irText/firProblems/valueClassEquals.fir.kt.txt

@@ -26,7 +26,7 @@ value class Z {
   }
 
   override fun toString(): String {
-    return "Z(s=" + <this>.#s + ")"
+    return "Z(" + "s=" + <this>.#s + ")"
   }
 
 }