KT-7135 Java to Kotlin converter should update usages in Java and Koltin code in the rest of the project

#KT-7135 Fixed

j2k/testData/multiFile/ToCompanionObject/external/JavaFile.java

@@ -0,0 +1,16 @@
+package test;
+
+class C {
+    void foo(ClassWithStatics c) {
+        ClassWithStatics.staticMethod(ClassWithStatics.staticField);
+        c.instanceMethod();
+        ClassWithStatics.staticField += 2;
+    }
+}
+
+class D extends ClassWithStatics {
+    void foo() {
+        staticMethod(staticField);
+        ourValue *= 2;
+    }
+}