[FIR] Approximate exotic return types for public declarations

compiler/testData/diagnostics/tests/inference/publicApproximation/chainedLambdas.fir.kt

@@ -29,6 +29,6 @@ fun chained2(arg: First) = run {
 }
 
 fun test(arg: First) {
-    chained1(arg).first()
-    chained2(arg).first()
+    chained1(arg).<!UNRESOLVED_REFERENCE!>first<!>()
+    chained2(arg).<!UNRESOLVED_REFERENCE!>first<!>()
 }

compiler/testData/diagnostics/tests/inference/publicApproximation/intersectionAfterSmartCastInLambdaReturn.fir.kt

@@ -33,6 +33,6 @@ fun intersectArgWithSmartCastFromLambda(arg: One, arg2: Base) = argOrFn(arg) {
 }
 
 fun test() {
-    intersectAfterSmartCast(O1, O2).base()
-    intersectArgWithSmartCastFromLambda(O1, O2).base()
+    intersectAfterSmartCast(O1, O2).<!UNRESOLVED_REFERENCE!>base<!>()
+    intersectArgWithSmartCastFromLambda(O1, O2).<!UNRESOLVED_REFERENCE!>base<!>()
 }

compiler/testData/diagnostics/tests/inference/publicApproximation/smartCastInLambdaReturnAfterIntersection.fir.kt

@@ -18,5 +18,5 @@ fun smartCastAfterIntersection(a: One, b: Two) = run {
 }
 
 fun test(one: One, two: Two) {
-    smartCastAfterIntersection(one, two)?.base()
+    smartCastAfterIntersection(one, two)?.<!UNRESOLVED_REFERENCE!>base<!>()
 }

compiler/testData/diagnostics/tests/inference/publicApproximation/twoIntersections.fir.kt

@@ -21,5 +21,5 @@ fun <S> intersectNoBound(vararg elements: S): S = TODO()
 fun some(a: One, b: Two, c: Three) = intersectNoBound(intersect(a, b), c)
 
 fun test(arg: Base, arg2: Base) {
-    some(O1, O2, O3).base()
+    some(O1, O2, O3).<!UNRESOLVED_REFERENCE!>base<!>()
 }