The function _compute_parent_rating_percentage_satisfaction used the creation
date of the rating to compute the percentage.
However when a client give a new rating, it updates the old one.
As a result it doesn't give the recent satisfaction percentage,
but the satisfaction percentage of recently created tickets.
In other words recently angry clients from old projects would not appear.
Similarly this method is somewhat reimplemented directly in SQL in the rating
route, which happens to be in the project controller.
opw 1921486
closesodoo/odoo#30752
Displaying the rating of project is moved directly
in project module, since it does not depends on website.
User may want to display rating of its support project
even without website.
Nans Lefebvre