[FIR] Implement SAM candidates discrimination

compiler/testData/diagnostics/tests/platformTypes/methodCall/kt27565.fir.kt

@@ -11,8 +11,8 @@ public interface Runnable {
 // FILE: k.kt
 
 fun fail() {
-    <!AMBIGUITY!>foo<!>({ }, { })
-    <!AMBIGUITY!>foo<!>(::bar, { })
+    foo({ }, { })
+    foo(::bar, { })
 }
 
 fun foo(f: Runnable, selector: () -> Unit) {}

compiler/testData/diagnostics/tests/resolve/overloadConflicts/allLambdas.fir.kt

@@ -7,4 +7,4 @@ object X2
 fun <T1> foo(x: T1, f: (T1) -> T1) = X1
 fun <T2> foo(xf: () -> T2, f: (T2) -> T2) = X2
 
-val test: X2 = <!AMBIGUITY!>foo<!>({ 0 }, { it -> it + 1 })
+val test: X2 = foo({ 0 }, { it -> it + 1 })

compiler/testData/diagnostics/tests/samConversions/sameCandidatesFromKotlinAndJavaInOneScope.fir.kt

@@ -21,6 +21,6 @@ interface B {
 interface C : B, Other
 
 fun test(c: C) {
-    c.<!AMBIGUITY!>pluginManagement<!> {
+    c.pluginManagement {
     }
 }