[FIR] Support completion of lambdas with type variable as expected type

#KT-37310 Fixed
#KT-37304 Fixed

compiler/testData/diagnostics/tests/resolve/resolveWithFunctionLiteralWithId.fir.kt

@@ -1,32 +0,0 @@
-//If this test hangs, it means something is broken.
-object A {
-    val iii = 42
-}
-
-//inappropriate but participating in resolve functions
-fun foo(s: String, a: Any) = s + a
-fun foo(a: Any) = a
-fun foo(i: Int) = i
-fun foo(a: Any, i: Int, f: ()-> Int) = "$a$i${f()}"
-fun foo(f: (Int)->Int, i: Int) = f(i)
-fun foo(f: (String)->Int, s: String) = f(s)
-fun foo(f: (Any)->Int, a: Any) = f(a)
-fun foo(s: String, f: (String, String)->Int) = f(s, s)
-//appropriate function
-fun foo(i: Int, f: (Int)->Int) = f(i)
-
-fun <T> id(t: T) = t
-
-fun test() {
-    <!INAPPLICABLE_CANDIDATE!>foo<!>(1, id { x1 ->
-        <!INAPPLICABLE_CANDIDATE!>foo<!>(2, id { x2 ->
-            <!INAPPLICABLE_CANDIDATE!>foo<!>(3, id { x3 ->
-                <!INAPPLICABLE_CANDIDATE!>foo<!>(4, id { x4 ->
-                    <!INAPPLICABLE_CANDIDATE!>foo<!>(5, id { x5 ->
-                        x1 + x2 + x3 + x4 + x5 + A.iii
-                    })
-                })
-            })
-        })
-    })
-}

compiler/testData/diagnostics/tests/resolve/resolveWithFunctionLiteralWithId.kt

@@ -1,3 +1,4 @@
+// FIR_IDENTICAL
 //If this test hangs, it means something is broken.
 object A {
     val iii = 42

compiler/testData/diagnostics/tests/resolve/resolveWithSpecifiedFunctionLiteralWithId.fir.kt

@@ -22,11 +22,11 @@ fun foo(i: Int, f: (Int) -> Int) = f(i)
 fun <T> id(t: T) = t
 
 fun test() {
-    foo(1, id(fun(x1: Int) =
-          foo(2, id(fun(x2: Int) =
-                foo(3, id(fun(x3: Int) =
-                      foo(4, id(fun(x4: Int) =
-                            foo(5, id(fun(x5: Int) =
+    <!AMBIGUITY!>foo<!>(1, id(fun(x1: Int) =
+          <!AMBIGUITY!>foo<!>(2, id(fun(x2: Int) =
+                <!AMBIGUITY!>foo<!>(3, id(fun(x3: Int) =
+                      <!AMBIGUITY!>foo<!>(4, id(fun(x4: Int) =
+                            <!AMBIGUITY!>foo<!>(5, id(fun(x5: Int) =
                                   x1 + x2 + x3 + x4 + x5 + A.iii
                             ))
                       ))