[Glitch] Fix infinite loading instead of soft 404 for non-existing remote accounts

Port 3ffaa966b0 to glitch-soc

Signed-off-by: Claire <claire.github-309c@sitedethib.com>

app/javascript/flavours/glitch/features/account_timeline/index.js

@@ -25,7 +25,13 @@ const emptyList = ImmutableList();
 const mapStateToProps = (state, { params: { acct, id, tagged }, withReplies = false }) => {
   const accountId = id || state.getIn(['accounts_map', normalizeForLookup(acct)]);
 
-  if (!accountId) {
+  if (accountId === null) {
+    return {
+      isLoading: false,
+      isAccount: false,
+      statusIds: emptyList,
+    };
+  } else if (!accountId) {
     return {
       isLoading: true,
       statusIds: emptyList,