Correct Gulf of St. Lawrence map (#2555)

## Description:

Adds a small island (St. Paul's Island) between Nova Scotia and
Newfoundland that was unintentionally missing.

<img width="1012" height="758" alt="Screenshot 2025-12-03 002943"
src="https://github.com/user-attachments/assets/c753a57f-333a-49f9-8b7a-3e83ccf999a1"
/>

## Checklist:

- [x] I have added screenshots for all UI updates
- [x] I process any text displayed to the user through translateText()
and I've added it to the en.json file
- [x] I have added relevant tests to the test directory
- [x] I confirm I have thoroughly tested these changes and take full
responsibility for any bugs introduced

## Discord Username:

sehentsin

resources/maps/gulfofstlawrence/manifest.json

@@ -1,7 +1,7 @@
 {
   "map": {
     "height": 1348,
-    "num_land_tiles": 873960,
+    "num_land_tiles": 874011,
     "width": 1620
   },
   "map16x": {
@@ -11,7 +11,7 @@
   },
   "map4x": {
     "height": 674,
-    "num_land_tiles": 213046,
+    "num_land_tiles": 213053,
     "width": 810
   },
   "name": "Gulf of St. Lawrence",