tests fixed

idea/testData/quickfix/typeAddition/afterPublicValWithoutReturnType.kt

@@ -1,4 +1,4 @@
 // "Specify type explicitly" "true"
 package a
 
-public val <caret>l: MutableList<Int> = java.util.Collections.emptyList<Int>()
+public val <caret>l: List<Int> = java.util.Collections.emptyList<Int>()

idea/testData/quickfix/typeImports/afterHasThisImport.kt

@@ -9,7 +9,7 @@ import java.util.List
 
 class M {
     trait A {
-        val l<caret>: MutableList<Int>
+        val l<caret>: jet.List<Int>
     }
 }
 }

idea/testData/quickfix/typeImports/afterToImport1.kt

@@ -5,6 +5,6 @@ import java.util.Collections
 
 class M {
     trait A {
-        abstract val l<caret>: MutableList<Int>
+        abstract val l<caret>: List<Int>
     }
 }