Added test for second press completion for inaccessible

idea/idea-completion/testData/basic/multifile/MoreSpecificExtensionIsPrivate/MoreSpecificExtensionIsPrivate.dependency.kt

@@ -0,0 +1,4 @@
+package dependency
+
+fun Any.xxx(): Int = 1
+private fun ppp.C.xxx(): Int = 1

idea/idea-completion/testData/basic/multifile/MoreSpecificExtensionIsPrivate/MoreSpecificExtensionIsPrivate.kt

@@ -0,0 +1,14 @@
+package ppp
+
+import dependency.*
+
+class C
+
+fun foo(c: C) {
+    c.xx<caret>
+}
+
+// we should not include inaccessible extension even on the second completion because the call won't resolve into it anyway
+// INVOCATION_COUNT: 2
+// EXIST: { lookupString: "xxx", itemText: "xxx", tailText: "() for Any in dependency", typeText: "Int" }
+// NOTHING_ELSE