KotlinAnnotatedElementsSearcher optimization

When possible, try to resolve references in types using only the PSI
without building the full resolve session.

idea/testData/search/annotations/testAmbiguousNestedPrivateAnnotationClass.kt

@@ -0,0 +1,13 @@
+package foo
+
+annotation class Test
+
+object Foo {
+    private annotation class Test
+}
+
+@Test fun foo()
+
+// ANNOTATION: foo.Test
+// SEARCH: method:foo
+// OPTIMIZED_TRUE: 1