IDEA-151190 Change class signature doesn't support complicated bounds

java/java-tests/testData/refactoring/changeClassSignature/AddBoundWithIntersection.java

@@ -0,0 +1,9 @@
+import java.io.Serializable;
+
+class <caret>C {}
+
+class Some implements Runnable, Serializable {
+    void m() {
+      C c = new C();
+    }
+}

java/java-tests/testData/refactoring/changeClassSignature/AddBoundWithIntersection.java.after

@@ -0,0 +1,9 @@
+import java.io.Serializable;
+
+class C<T extends Runnable & Serializable> {}
+
+class Some implements Runnable, Serializable {
+    void m() {
+      C<Some> c = new C<Some>();
+    }
+}

java/java-tests/testData/refactoring/changeClassSignature/AddWithBound.java.after

@@ -1,8 +1,9 @@
+import java.util.Collection;
 import java.util.List;
 
 public class Main {
 
-  class B<T extends java.util.Collection> {}
+  class B<T extends Collection> {}
 
   public void someMethod() {
     B<List> b = new B<List>();

java/java-tests/testData/refactoring/changeClassSignature/ModifyWithBound.java.after

@@ -1,8 +1,9 @@
+import java.util.Collection;
 import java.util.List;
 
 public class Main {
 
-  class B<T extends java.util.Collection, X extends Long> {}
+  class B<T extends Collection, X extends Long> {}
 
   public void someMethod() {
     B<List, Long> b = new B<>();