[FIR] Transform when conditions with boolean expected type

#KT-42130 Fixed

compiler/testData/codegen/box/inference/kt42130.kt

@@ -0,0 +1,21 @@
+// ISSUE: KT-42130
+
+interface A
+interface B : A
+
+fun B.foo(): Boolean = true
+fun <T> run(action: () -> T): T = action()
+
+fun foo(a: A): String {
+    return when (a) {
+        is B -> when {
+            run { a.foo() } -> "OK"
+            else -> "Fail 1"
+        }
+        else -> "Fail 2"
+    }
+}
+
+class C : B
+
+fun box(): String = foo(C())