Britannia Map fix (#2863)

## Description:

Fixed map assets and generated outputs. Fixed issues with map not
loading and pathfinding not working. Britannia (new) and Britannia
Classic. Now work correctly.

## Please complete the following:

- [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

## Please put your Discord username so you can be contacted if a bug or
regression is found:

Tsprophet

---------

Co-authored-by: Harry <Harry.bath94@gmail.com>
Co-authored-by: iamlewis <lewismmmm@gmail.com>

resources/maps/britannia/manifest.json

@@ -1,119 +1,119 @@
 {
   "map": {
-    "height": 2514,
-    "num_land_tiles": 1669657,
-    "width": 2048
+    "height": 2088,
+    "num_land_tiles": 1188359,
+    "width": 1600
   },
   "map16x": {
-    "height": 628,
-    "num_land_tiles": 99515,
-    "width": 512
+    "height": 522,
+    "num_land_tiles": 70697,
+    "width": 400
   },
   "map4x": {
-    "height": 1257,
-    "num_land_tiles": 410570,
-    "width": 1024
+    "height": 1044,
+    "num_land_tiles": 292283,
+    "width": 800
   },
-  "name": "britannia",
+  "name": "Britannia",
   "nations": [
     {
-      "coordinates": [1969, 2305],
+      "coordinates": [1539, 1915],
       "flag": "fr",
       "name": "Pas-de-Calais"
     },
     {
-      "coordinates": [274, 1494],
+      "coordinates": [214, 1242],
       "flag": "ie",
       "name": "Mayo"
     },
     {
-      "coordinates": [242, 1931],
+      "coordinates": [189, 1605],
       "flag": "ie",
       "name": "Kerry"
     },
     {
-      "coordinates": [328, 1754],
+      "coordinates": [257, 1458],
       "flag": "ie",
       "name": "Clare"
     },
     {
-      "coordinates": [675, 1559],
+      "coordinates": [527, 1295],
       "flag": "ie",
       "name": "Meath"
     },
     {
-      "coordinates": [900, 518],
+      "coordinates": [703, 431],
       "flag": "gb-sct",
       "name": "Highland"
     },
     {
-      "coordinates": [782, 830],
+      "coordinates": [611, 690],
       "flag": "gb-sct",
       "name": "Argyll and Bute"
     },
     {
-      "coordinates": [1431, 1447],
+      "coordinates": [1118, 1202],
       "flag": "gb-eng",
       "name": "North Yorkshire"
     },
     {
-      "coordinates": [1243, 622],
+      "coordinates": [971, 517],
       "flag": "gb-sct",
       "name": "Aberdeenshire"
     },
     {
-      "coordinates": [1218, 1309],
+      "coordinates": [951, 1088],
       "flag": "gb-eng",
       "name": "Cumbria"
     },
     {
-      "coordinates": [1082, 1202],
+      "coordinates": [846, 1000],
       "flag": "gb-sct",
       "name": "Dumfries and Galloway"
     },
     {
-      "coordinates": [1096, 808],
+      "coordinates": [856, 672],
       "flag": "gb-sct",
       "name": "Perthshire and Kinross"
     },
     {
-      "coordinates": [1626, 1688],
+      "coordinates": [1271, 1403],
       "flag": "gb-eng",
       "name": "Lincolnshire"
     },
     {
-      "coordinates": [1110, 2266],
+      "coordinates": [867, 1883],
       "flag": "gb-eng",
       "name": "Devon"
     },
     {
-      "coordinates": [1345, 1138],
+      "coordinates": [1051, 946],
       "flag": "gb-eng",
       "name": "Northumberland"
     },
     {
-      "coordinates": [1792, 1799],
+      "coordinates": [1400, 1495],
       "flag": "gb-eng",
       "name": "Norfolk"
     },
     {
-      "coordinates": [1154, 1888],
+      "coordinates": [902, 1569],
       "flag": "gb-wls",
       "name": "Powys"
     },
     {
-      "coordinates": [1801, 1905],
+      "coordinates": [1407, 1584],
       "flag": "gb-eng",
       "name": "Suffolk"
     },
     {
-      "coordinates": [1469, 2190],
+      "coordinates": [1148, 1820],
       "flag": "gb-eng",
       "name": "Hampshire"
     },
     {
-      "coordinates": [516, 1379],
-      "flag": "gb",
+      "coordinates": [404, 1146],
+      "flag": "gb-nir",
       "name": "Fermanagh"
     }
   ]