tighten AvatarBubbles profiles type to non-nullable

Now that the count prop drives placeholder slots, callers no longer need to pad
the profiles array with undefined, so the prop can be AnyProfileView[]. Drops
the now-dead falsy check in the self-filter and the defensive ?? undefined at
the one call site that had it.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

src/components/AvatarBubbles.tsx

@@ -34,7 +34,7 @@ export function AvatarBubbles({
   count,
 }: {
   animate?: boolean
-  profiles: (bsky.profile.AnyProfileView | undefined)[]
+  profiles: bsky.profile.AnyProfileView[]
   /**
    * By default, when there are more than 2 profiles, the current user is
    * filtered out (so you don't see yourself among your own group's members).
@@ -54,7 +54,7 @@ export function AvatarBubbles({
   const {currentAccount} = useSession()
   const profiles =
     !self && allProfiles.length > 2
-      ? allProfiles.filter(p => !p || p.did !== currentAccount?.did)
+      ? allProfiles.filter(p => p.did !== currentAccount?.did)
       : allProfiles
 
   const bubbleCount = Math.max(profiles.length, count ?? 0)

src/screens/Messages/components/OutgoingRequestListItem.tsx

@@ -63,7 +63,7 @@ export function OutgoingRequestListItem({
               (hovered || pressed || focused) && t.atoms.bg_contrast_25,
             ]}>
             <AvatarBubbles
-              profiles={[convoView?.owner ?? undefined]}
+              profiles={[convoView.owner]}
               count={convoView.memberCount}
               size={48}
             />