Restore explicit imports of Kotlin function types in Java

This is a follow-up to 738a84e259 and
d4965a4f3e. Optimize imports in all files
affected in those commits, drop temporary _.kt

idea/testData/refactoring/move/java/moveClass/moveInnerToTop/moveNestedClassToTopLevelInTheSamePackageAndAddOuterInstanceWithLambda/after/a/main.java

@@ -1,7 +1,4 @@
 package a;
 
-import kotlin.jvm.functions.*;
-import kotlin.*;
-
 public class A {
 }

idea/testData/refactoring/move/java/moveClass/moveInnerToTop/moveNestedClassToTopLevelInTheSamePackageAndAddOuterInstanceWithLambda/before/a/main.java

@@ -1,7 +1,6 @@
 package a;
 
-import kotlin.jvm.functions.*;
-import kotlin.*;
+import kotlin.jvm.functions.Function0;
 
 public class A {
     public class <caret>X {