[FIR2IR] Properly approximate intersection types during fir2ir conversion

^KT-62544 Fixed

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

@@ -41,7 +41,7 @@ interface FirCallableMemberDeclaration<F : FirCallableMemberDeclaration<F>> : Fi
 }
 
 fun foo(candidate: Candidate) {
-  val me: FirSymbolOwner<*> = candidate.<get-symbol>().<get-fir>()
+  val me: Any = candidate.<get-symbol>().<get-fir>()
   when {
     when {
       me is FirCallableMemberDeclaration<*> -> EQEQ(arg0 = me /*as FirCallableMemberDeclaration<*> */.<get-symbol>(), arg1 = null).not()
@@ -50,3 +50,4 @@ fun foo(candidate: Candidate) {
     }
   }
 }
+