Enable cross-tab auto-collapse synchronization

The following discussion from !217858 should be addressed:

• @ms.mondrian started a discussion: (+2 comments)

  question - is this the case we're supporting with this MR or a follow up? adding new comments/resolving comments at overview/changes tab do not reflect on the other one, until page refreshes

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It's possible that this issue may be the result of all line discussions fataling out after resolving. Fixing that issue may unblock the cross-store syncing that would fix this tab synchronization issue.