[13.0][FIX] excel_import_export: external ids naming.

[kittiu]

Forward port from https://github.com/OCA/server-tools/pull/1899

Because of the naming given to the external ID's, Odoo interprets all this data as regular module data and when you update the module and those external ID's are not present in the module files, it tries to delete them.

[github-actions[bot]]

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