[WIP] Fix data-links confusion during view navigation

[Copilot]

Thanks for asking me to work on this. I will get started on it and keep this PR's description up to date as I form a plan and make progress.

Original prompt

I need to summarize changes in this PR. The reason for this change is that when you navigate between different views but in the same project, data-links get confused. They get confused because when we initiate the document service, we construct it with a dummy editor document that later is replaced by a proper one loaded from the backend. When you normally visit the site it works fine, as datalinks and all other machinery gets subscribed to the document changes after we replace it with a proper document. But when you navigate between pages, the subcriptino already happened, and then briefely we start doing reactions on dummy document.

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