[FIR] Fix lambda resolve in independent context

compiler/testData/diagnostics/tests/inference/invokeLambdaAsFunction.fir.kt

@@ -1,7 +1,7 @@
-fun test1(i: Int) = <!UNRESOLVED_REFERENCE!>{ i ->
+fun test1(i: Int) = { i ->
     i
-}(i)<!>
+}(i)
 
-fun test2() = <!UNRESOLVED_REFERENCE!>{ i -> i }()<!>
+fun test2() = <!INAPPLICABLE_CANDIDATE!>{ i -> i }()<!>
 
-fun test3() = <!UNRESOLVED_REFERENCE!>{ i -> i }(1)<!>
+fun test3() = { i -> i }(1)

compiler/testData/diagnostics/tests/inference/kt12399.fir.kt

@@ -1,3 +1,3 @@
 fun foo(a: Any) {
-    foo(<!UNRESOLVED_REFERENCE!>{ index -> } {  }<!>)
+    foo({ index -> } {  })
 }