FIR resolve: add partial support of extension lambda calls

Here we introduce ONLY_IMPLICIT_RECEIVER tower level
to support extension lambda calls on local variables,
and soften extension receiver checks to make such extensions visible & applicable.
Also here we try to map arguments twice for functional types

compiler/testData/diagnostics/tests/labels/kt4586.fir.kt

@@ -3,7 +3,7 @@
 
 fun string(init: StringBuilder.() -> Unit): String{
     val answer = StringBuilder()
-    answer.<!UNRESOLVED_REFERENCE!>init<!>()
+    answer.init()
     return answer.toString()
 }
 

compiler/testData/diagnostics/tests/labels/labelReferencesInsideObjectExpressions.fir.kt

@@ -16,7 +16,7 @@ fun B.b() {
 
 
 fun test() {
-    fun <T> without(f: T.() -> Unit): Unit = (null!!).<!UNRESOLVED_REFERENCE!>f<!>()
+    fun <T> without(f: T.() -> Unit): Unit = (null!!).f()
     without<B>() b@ {
         object : A {
             override fun foo() {