The project privacy_visibility tooltip doesn't reflect the actual behavior
for the "Invited portal users and all internal users" selection.
This commit rephrases the tooltip of that field in order to correctly match its behavior.
It also slightly changes the name of the options to match the new tooltip.
Task-2871771
closesodoo/odoo#93911
X-original-commit: 9ef7030e3346eda267bc27b47a8a168acdc4a7b9
Signed-off-by: Laurent Stukkens (ltu) <ltu@odoo.com>