[FIR] Implement new bound smartcast algorithm

#KT-36055 Fixed

compiler/testData/diagnostics/tests/nullabilityAndSmartCasts/unstableSmartcastWhenOpenGetterWithOverloading.fir.kt

@@ -9,7 +9,7 @@ class CtxImpl : Ctx {
 open class Test(open val ctx: Ctx) {
     fun test() {
         when (ctx) {
-            is CtxImpl -> ctx.doJob(2)
+            is CtxImpl -> ctx.<!UNRESOLVED_REFERENCE!>doJob<!>(2)
         }
     }
 }

compiler/testData/diagnostics/tests/nullabilityAndSmartCasts/unstableSmartcastWithOverloadedExtensions.fir.kt

@@ -9,6 +9,6 @@ var a: A? = null
 
 fun smartCastInterference(b: B) {
     if (a != null) {
-        a.foo(b)
+        a.<!INAPPLICABLE_CANDIDATE!>foo<!>(b)
     }
 }