fix(db): drop the duplicate 0285 journal entry

The regenerate that added the partial-index predicate appended a second
entry for the same migration, so drizzle would have replayed it — dropping
and rebuilding the index, leaving a window with no unique constraint.

Author: waleedlatif1

packages/db/migrations/meta/_journal.json

@@ -1996,13 +1996,6 @@
       "when": 1786217700133,
       "tag": "0285_workspace_inbox_provider_id_idx",
       "breakpoints": true
-    },
-    {
-      "idx": 285,
-      "version": "7",
-      "when": 1786218400496,
-      "tag": "0285_workspace_inbox_provider_id_idx",
-      "breakpoints": true
     }
   ]
 }