Static members completion works in smart completion + fixed incorrect finding of java method descriptor that caused duplicated items

idea/idea-completion/testData/smartMultiFile/StaticMembers1/StaticMembers1.kt

@@ -0,0 +1,24 @@
+package test
+
+import dependency1.O1.foo
+import JavaClass1.f
+
+class C
+
+fun foo(): C {
+    return <caret>
+}
+
+// INVOCATION_COUNT: 1
+
+// EXIST: { allLookupStrings: "bar", itemText: "O1.bar", tailText: "() (dependency1)", attributes: "" }
+// EXIST: { itemText: "foo", tailText: "()", attributes: "" }
+// ABSENT: { itemText: "O1.foo" }
+// ABSENT: { itemText: "O2.foo" }
+
+// EXIST: { allLookupStrings: "g", itemText: "JavaClass1.g", tailText: "() (<root>)", attributes: "" }
+// EXIST: { itemText: "f", tailText: "()", attributes: "" }
+// ABSENT: { itemText: "JavaClass1.f" }
+// ABSENT: { itemText: "JavaClass1.h" }
+// ABSENT: { itemText: "JavaClass2.f" }
+// ABSENT: { itemText: "JavaClass2.g" }