KT-65152 [AA] Add extra test for package resolution

Make sure that, when ambiguous, both the package
and the callable/class/property are resolved from
KDoc reference.

Do a slight refactoring of `KDocReferenceResolver`

This behavior is also true for K1

analysis/analysis-api/testData/referenceResolve/kDoc/packages/packageVsTopLevelDeclarations.kt

@@ -0,0 +1,13 @@
+package foo
+
+interface foo
+
+fun foo() {}
+
+/**
+ * [<caret_1>foo]
+ *
+ * [<caret_2>foo.foo]
+ * [foo.<caret_3>foo]
+ */
+fun usage() {}