To Reproduce
============
- on project task add a property
- go back to list of tasks and try to export the modified task
an error is raised
Problem
=======
The property field is represented as dict (same for JSON fields)
Which is not expected in `write_cell`
Solution
========
handle `dict` type
opw-3431718
closesodoo/odoo#132303
X-original-commit: 1e9ed945c637e78b1003115dfd4042b3d87d8365
Signed-off-by: Julien Castiaux (juc) <juc@odoo.com>
Signed-off-by: Abdelouahab Laaroussi (abla) <abla@odoo.com>