Fix version upload for popular projects (#4410)

* Only notify users that exist

* chore: query cache, clippy, fmt

apps/labrinth/.sqlx/query-c308d4eb45008d0ff9f2cbc955e06268bc67eb546f9a14354fb668a0b2d2a78a.json

@@ -1,6 +1,6 @@
 {
   "db_name": "PostgreSQL",
-  "query": "\n        SELECT follower_id FROM mod_follows\n        WHERE mod_id = $1\n        ",
+  "query": "\n        SELECT mf.follower_id FROM mod_follows mf\n        INNER JOIN users u ON u.id = follower_id\n        WHERE mf.mod_id = $1\n        ",
   "describe": {
     "columns": [
       {
@@ -18,5 +18,5 @@
       false
     ]
   },
-  "hash": "fdfe36dcb85347a3a8228b5d5fc2d017b9baa307b5ae0ae9deaafab9dcdcb74a"
+  "hash": "c308d4eb45008d0ff9f2cbc955e06268bc67eb546f9a14354fb668a0b2d2a78a"
 }

apps/labrinth/src/routes/v3/version_creation.rs

@@ -400,8 +400,9 @@ async fn version_create_inner(
 
     let users = sqlx::query!(
         "
-        SELECT follower_id FROM mod_follows
-        WHERE mod_id = $1
+        SELECT mf.follower_id FROM mod_follows mf
+        INNER JOIN users u ON u.id = follower_id
+        WHERE mf.mod_id = $1
         ",
         builder.project_id as crate::database::models::ids::DBProjectId
     )