KT-12103 Smart completion for nested SAM-adapter produces short unresolved name

#KT-12103 Fixed

idea/idea-completion/testData/handlers/multifile/smart/NestedSamAdapter-1.kt

@@ -0,0 +1,6 @@
+fun foo(x: Outer.Nested) {
+}
+
+fun bar() {
+    foo(<caret>)
+}

idea/idea-completion/testData/handlers/multifile/smart/NestedSamAdapter.java

@@ -0,0 +1,5 @@
+public class Outer {
+    public interface Nested {
+        void foo();
+    }
+}

idea/idea-completion/testData/handlers/multifile/smart/NestedSamAdapter.kt.after

@@ -0,0 +1,6 @@
+fun foo(x: Outer.Nested) {
+}
+
+fun bar() {
+    foo(Outer.Nested { <caret> })
+}