[6.3] Get the right data when the navigator has multiple top-level roots and multiple languages #983
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Explanation: In the use cases of navigators with multiple top-level root and multiple languages, we want to make sure that the URL queries that are added in different languages don't interfere with the election of the top-level root node.
Scope: Updates the navigator
Issue: rdar://158778571.
Risk: Low. It only affects the navigator.
Testing: added new unit test.
Reviewer: @mportiz08
Original PR: #980