NI: Fix resolution ambiguity for references returned from lambda

^KT-32267 Fixed

compiler/testData/diagnostics/tests/inference/coercionToUnit/coercionToUnitReference.fir.kt

@@ -0,0 +1,14 @@
+// SKIP_TXT
+// !DIAGNOSTICS: -UNUSED_PARAMETER
+// !LANGUAGE: +NewInference
+
+fun foo(f: () -> Unit) {}
+fun bar(): Int = 42
+fun test() {
+    foo {
+        ::bar // should be fine
+    }
+    foo {
+        { "something" } // should be fine
+    }
+}