Files that are not completely synced should not be visible in folders (or marked appropriately)

[crtahlin]

Description

Currently, when importing a shared folder (probably same with regular folders), the files shared appear relatively quickly (a couple of minutes?). But when trying to open them, most of the actions return an error. Presumably, the files are not completely copied to local filesystem.

Several days later, many more of the files open successfully, though still not all of them.

To Reproduce

1. import refrence: f3bee983a79c1b4ce80309ca465f6a16eec34ccfcd0f984a8e22d364c69589f8b3348ced1020a84f41f318db9511f339fdd69297f74836bbe6549184f555c9bd
2. check if files open

Expected behaviour

Users expect that files visible in folder are complete and can be worked with.

So, either the files should not appear in folder until they are fully synced. Or they should have some status shown, showing they are still syncing (perhaps through adding "*.downloading" suffix to their file name, or sth similar.

Screenshots

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Attempted Fixes

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Additional context

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