[APP-1767] Live event feeds (#9696)

* Update env config for new worker setup

* Add liveEvents context

* Add live event feed card to Explore

* Add Discover banner/trending handling, device storage

* Add prefs methods, hook up to Discover banner

* Add settings toggle

* Fix up metrics and mutations

* Simplify undo logic

* Handle previews

* Update overlay color and text color handling

* Update metrics

* Handle live event in feed card

* Show multiple feeds on Explore for bsky team

* Fix dev/preview handling bug

* Add sidebar cards, update types

* Fix type error

* Fix type error

* Feedback

* Blurhash fix

* Copy update

* Dev only debug hook

src/view/com/feeds/ComposerPrompt.tsx

@@ -148,8 +148,6 @@ export function ComposerPrompt() {
         a.relative,
         a.flex_row,
         a.align_start,
-        a.border_t,
-        t.atoms.border_contrast_low,
         {
           paddingLeft: 18,
           paddingRight: 15,