[Glitch] Fix 404 and 410 API errors being silently discarded in WebUI

Port front-end changes from 0d117c106a to glitch-soc

Signed-off-by: Thibaut Girka <thib@sitedethib.com>

app/javascript/flavours/glitch/actions/accounts.js

@@ -370,6 +370,7 @@ export function fetchFollowersFail(id, error) {
     type: FOLLOWERS_FETCH_FAIL,
     id,
     error,
+    skipNotFound: true,
   };
 };
 
@@ -456,6 +457,7 @@ export function fetchFollowingFail(id, error) {
     type: FOLLOWING_FETCH_FAIL,
     id,
     error,
+    skipNotFound: true,
   };
 };
 
@@ -545,6 +547,7 @@ export function fetchRelationshipsFail(error) {
     type: RELATIONSHIPS_FETCH_FAIL,
     error,
     skipLoading: true,
+    skipNotFound: true,
   };
 };