Move: Optimize imports after applying "Move declaration to separate file" intention

#KT-10174 Fixed

idea/testData/multiFileIntentions/moveDeclarationToSeparateFile/optimizeImports/before/Baz.kt

@@ -0,0 +1,4 @@
+package baz
+
+class Baz {
+}

idea/testData/multiFileIntentions/moveDeclarationToSeparateFile/optimizeImports/before/test.kt

@@ -0,0 +1,9 @@
+package foo.bar
+
+import baz.Baz
+
+class <caret>Foo {
+    val b = Baz()
+}
+
+class Bar