Previously, there were three workflows when sharing a topic or a post:
- sharing URL displayed in popup or modal, in an input or textarea element
- native sharing dialog on touch devices with native sharing support
- and a fallback to the URL displayed as link element on touch devices with no native sharing support
This PR removes the third option. We were only displaying this on non-iOS/non-Android touch devices like laptops with a touch screen, and it was buggy, see https://meta.discourse.org/t/user-experience-on-discourse-with-optional-touch-input/40190/24 for details.