No they hadn't. They temporarily stopped offensive, not defensive intel sharing. They won't let you put a bullseye on a T-80 BVM tank in a hull down position for F-16s, but will let you know where to destroy Shahed drones that are coming to Ukrainian cities.
The US military is not an unlimited resource, I would rather they deter this....
en.wikipedia.org
Then this.
Plus Europe minus the UK is too far away from Taiwan for it to matter to them geographically. Their navies (again minus the UK and possibly France) is too underequipped to deal with the PLAN.
Should a war erupt with China over Taiwan, many observers seem to think that Europe would be largely irrelevant as far as the actual fighting is
warontherocks.com
