Share works in the iOS app on an episode of a private feed (#452)

With no ipx-play link (a private feed, or no ipx-play set up), Share fell
back to the share sheet after the request for the link, which WebKit
refuses once an await has come between the press and it, and a Patreon
address went through confirm() first, which the iOS app answers Cancel
without showing anything (#453). Taps sent the request and nothing
appeared. That address now goes through the same menu as an ipx-play
link, so the sheet opens from a press of its own, and the warning about
an address that carries your access is written in the menu.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

web/CHANGELOG.md

@@ -13,7 +13,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Added
 
-- Share on an episode offers Share link, Share from where you are, and Copy link, with a link to the episode's page on ipx-play that anyone can play; an admin sets ipx-play up in Admin, Directory (#447).
+- Share on an episode offers Share link, Share from where you are, and Copy link, with a link to the episode's page on ipx-play that anyone can play; an episode of a private feed offers its own address in the same menu, saying so when the address carries your own access to the feed. An admin sets ipx-play up in Admin, Directory (#447, #452).
 - In the iOS app, Settings has a This device section for the app's server and player token, with a button that makes a token and hands it to the app (#445).
 - In the iOS app, the page registers the phone with ipx for its icon's count, and signing out removes it (#433).
 - In the iOS app, the player bar shows what CarPlay plays, so it can be paused on the phone after leaving the car, including when the app was opened by the car (#420, #442).