Make the "view posts by @user" filtered topic view shareable / linkable

[Moin]

I think it’s shareable, but difficult to link

@Discourse

4. Post filtering: For users with multiple posts in a topic, a filter button with their post count appears. Clicking this filters the topic to show only that user’s posts.

For anyone interested in the underlying magic of this feature, it appends ?username_filters=USERNAME to the end of the topic URL to achieve the filtered view

So you can link to https://unicyclist.com/t/exoskeleton-riding/292153?username_filters=MadHatchetAndy. But currently you need to know how to create that link