[FIX] tools: cherry-pick of 0529a7f9

extract terms in correct folder

If two addons path have a common part in the folder name (e.g. `/home/alice/dev`
and `/home/alice/devodoo`), the `get_module_from_path` method may match the
wrong folder.
A file `/home/alice/devodoo/bob/models.py` would wrongly match `/home/alice/dev`
path (due to the lack of separator) and the returned module would be `odoo`
(`"odoo/bob/models.py".split('/')[0]`).

In such scenario, the translations of files (code, static folder, report) would
not be included in the exported translation file.

Force the module path to ends with a folder separator to avoid wrong matching.

Closes #13363