QGIS project containing mesh layer fails to open the ML

[qgib]

Author Name: Saber Razmjooei (@saberraz)
Original Redmine Issue: 18801
Affected QGIS version: 3.1(master)
Redmine category:project_loading/saving
Assignee: Peter Petrik

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This is related to:
#6820

Open QGIS
Add a mesh layer (in my case 2dm).
Save the project
Close QGIS
Open QGIS and try to load the saved project
No mesh layer is present

[qgib]

Author Name: Peter Petrik (@PeterPetrik)

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Applied in changeset 12183e9.

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• done_ratio was changed from 0 to 100
• status_id was changed from Open to Closed