Fix for KT-14885 J2K on paste adds duplicated imports

idea/testData/copyPaste/plainTextConversion/ImportFromTarget.expected.kt

@@ -0,0 +1,10 @@
+package com.example
+
+import java.util.UUID
+
+
+class ExampleClass {
+    override fun toString(): String {
+        return UUID.randomUUID().toString()
+    }
+}