Use classes to increase search pattern for static declarations

Static common names like 'INSTANCE', 'create' can give many irrelevant
references in the project.

#KT-17000 Fixed
#KT-14974 Fixed

idea/testData/findUsages/java/findJavaMethodUsages/javaInvokeWithStaticImport.0.java

@@ -0,0 +1,11 @@
+// PSI_ELEMENT: com.intellij.psi.PsiMethod
+// OPTIONS: usages
+
+public class JavaClassWI {
+    public void <caret>invoke() {
+    }
+
+    public static JavaClassWI INSTANCE = new JavaClass();
+
+    public static class Other extends JavaClassWI {}
+}