[FIR] Update all required places according to changed overridden processing contract

This commit fixes all places that relied on the contract described in
  the previous commit and also updates corresponding tests

^KT-63738

compiler/testData/ir/irText/expressions/smartCastAside.kt

@@ -1,3 +1,4 @@
+// FIR_IDENTICAL
 interface A {
     fun foo()
 }