feat(db): add 0037_add_extra_large_to_pet_size_category — register extra_large in journal

GRO-1979: The pet_size_category enum created in 0031_buffer_rules.sql
contained ('small', 'medium', 'large', 'xlarge'), but the drizzle schema
and seed.ts both use 'extra_large'. The mismatch caused the UAT seed job
to fail with:
  invalid input value for enum pet_size_category: "extra_large"

This migration adds the 'extra_large' value to pet_size_category and
registers it at idx 37 in the drizzle journal (sequel to 0035/0036
which registered short/medium/silky in coat_type under GRO-1971).

Non-transactional per Postgres restriction on ALTER TYPE ADD VALUE.

Co-Authored-By: Paperclip <noreply@paperclip.ing>

packages/db/migrations/meta/_journal.json

@@ -253,6 +253,13 @@
       "when": 1751480000000,
       "tag": "0036_add_missing_coat_type_values",
       "breakpoints": true
+    },
+    {
+      "idx": 37,
+      "version": "7",
+      "when": 1751500000000,
+      "tag": "0037_add_extra_large_to_pet_size_category",
+      "breakpoints": true
     }
   ]
 }