fix: Show posting app name if app link is missing (#912)

Previous code had a bug/typo, which meant the app the user was posting
from was not shown if the app did not have an associated website. But
the bullet separating the parts of the text was still shown, resulting
in a spurious dangling bullet.

app/src/main/java/app/pachli/adapter/StatusDetailedViewHolder.kt

@@ -65,10 +65,9 @@ class StatusDetailedViewHolder(
             }
         }
 
-        app?.also { application ->
-            val (name, website) = application
+        app?.also { (name, website) ->
             sb.append(metadataJoiner)
-            website?.also { sb.append(createClickableText(name, it)) ?: sb.append(name) }
+            website?.also { sb.append(createClickableText(name, it)) } ?: sb.append(name)
         }
 
         metaInfo.movementMethod = LinkMovementMethod.getInstance()