FIR: Fix resolution for type-alias based SAM

compiler/fir/analysis-tests/testData/resolveWithStdlib/samForComparator.kt

@@ -0,0 +1,10 @@
+// FULL_JDK
+
+fun foo(x: Comparator<in CharSequence>) {}
+
+
+fun main() {
+    foo { x, y ->
+        x.length - y.length
+    }
+}

compiler/fir/analysis-tests/testData/resolveWithStdlib/samForComparator.txt

@@ -0,0 +1,9 @@
+FILE: samForComparator.kt
+    public final fun foo(x: R|kotlin/Comparator<in kotlin/CharSequence>|): R|kotlin/Unit| {
+    }
+    public final fun main(): R|kotlin/Unit| {
+        R|/foo|(<L> = foo@fun <anonymous>(x: R|ft<kotlin/CharSequence, kotlin/CharSequence?>!|, y: R|ft<kotlin/CharSequence, kotlin/CharSequence?>!|): R|kotlin/Int| {
+            ^ R|<local>/x|.R|kotlin/CharSequence.length|.R|kotlin/Int.minus|(R|<local>/y|.R|kotlin/CharSequence.length|)
+        }
+        )
+    }