Fix completing members for receivers shadowed by DslMarker

#KT-20396 Fixed

idea/idea-completion/testData/basic/common/dslMarker/2receivers.kt

@@ -43,5 +43,5 @@ fun test() {
     }
 }
 
-// EXIST: {"lookupString":"two", "attributes":""}
-// EXIST: {"lookupString":"one", "attributes":["grayed"]}
+// EXIST: two
+// ABSENT: one

idea/idea-completion/testData/basic/common/dslMarker/child.kt

@@ -37,5 +37,5 @@ fun test() {
     }
 }
 
-// EXIST: {"lookupString":"container", "attributes":["grayed"]}
-// EXIST: {"lookupString":"child", "attributes":["grayed"]}
+// ABSENT: container
+// ABSENT: lookupString

idea/idea-completion/testData/basic/common/dslMarker/compositeDsl.kt

@@ -42,7 +42,9 @@ class DslOtherChild {
 
 @SimpleOtherDsl @SimpleDsl
 class DslAnotherChild {
+     fun foo () {
 
+     }
 }
 
 fun dsl(body: DslRoot.() -> Unit) {
@@ -66,6 +68,7 @@ fun test() {
     }
 }
 
-// EXIST: {lookupString:"otherThing", attributes:["grayed"]}
-// EXIST: {lookupString:"child", attributes:["grayed"]}
-// EXIST: {lookupString:"otherChild", attributes:["grayed"]}
+// EXIST: foo
+// ABSENT: otherThing
+// ABSENT: child
+// ABSENT: otherChild

idea/idea-completion/testData/basic/common/dslMarker/container.kt

@@ -34,5 +34,5 @@ fun test() {
     }
 }
 
-// EXIST: {"lookupString":"child", "attributes":["bold"]}
-// EXIST: {"lookupString":"container", "attributes":["grayed"]}
+// EXIST: child
+// ABSENT: container