Use leaflet npm version instead of the gem

Gemfile

@@ -35,7 +35,6 @@ gem "initialjs-rails", "~> 0.2.0.9"
 gem "invisible_captcha", "~> 2.1.0"
 gem "jquery-fileupload-rails"
 gem "kaminari", "~> 1.2.2"
-gem "leaflet-rails", "~> 1.9.3"
 gem "mini_magick", "~> 4.12.0"
 gem "omniauth", "~> 2.1.1"
 gem "omniauth-facebook", "~> 9.0.0"

Gemfile.lock

@@ -317,8 +317,6 @@ GEM
     language_server-protocol (3.17.0.3)
     launchy (2.5.2)
       addressable (~> 2.8)
-    leaflet-rails (1.9.3)
-      rails (>= 4.2.0)
     letter_opener (1.8.1)
       launchy (>= 2.2, < 3)
     letter_opener_web (2.0.0)
@@ -740,7 +738,6 @@ DEPENDENCIES
   kaminari (~> 1.2.2)
   knapsack_pro (~> 5.7.0)
   launchy (~> 2.5.2)
-  leaflet-rails (~> 1.9.3)
   letter_opener_web (~> 2.0.0)
   mdl (~> 0.12.0)
   mini_magick (~> 4.12.0)

app/assets/javascripts/application.js

@@ -104,7 +104,7 @@
 //= require tree_navigator
 //= require tag_autocomplete
 //= require polls_admin
-//= require leaflet
+//= require leaflet/dist/leaflet
 //= require map
 //= require polls
 //= require sortable

app/assets/stylesheets/application.scss

@@ -11,7 +11,7 @@
 @import "jquery-ui/themes/base/autocomplete";
 @import "jquery-ui/themes/base/datepicker";
 @import "jquery-ui/themes/base/sortable";
-@import "leaflet";
+@import "leaflet/dist/leaflet";
 
 @import "foundation_and_overrides";
 @import "fonts";

package-lock.json

@@ -8,7 +8,8 @@
       "dependencies": {
         "jquery": "^3.7.1",
         "jquery-ui": "^1.13.2",
-        "jquery-ujs": "^1.2.3"
+        "jquery-ujs": "^1.2.3",
+        "leaflet": "^1.9.4"
       }
     },
     "node_modules/jquery": {
@@ -31,6 +32,11 @@
       "peerDependencies": {
         "jquery": ">=1.8.0"
       }
+    },
+    "node_modules/leaflet": {
+      "version": "1.9.4",
+      "resolved": "https://registry.npmjs.org/leaflet/-/leaflet-1.9.4.tgz",
+      "integrity": "sha512-nxS1ynzJOmOlHp+iL3FyWqK89GtNL8U8rvlMOsQdTTssxZwCXh8N2NB3GDQOL+YR3XnWyZAxwQixURb+FA74PA=="
     }
   }
 }

package.json

@@ -3,6 +3,7 @@
   "dependencies": {
     "jquery": "^3.7.1",
     "jquery-ui": "^1.13.2",
-    "jquery-ujs": "^1.2.3"
+    "jquery-ujs": "^1.2.3",
+    "leaflet": "^1.9.4"
   }
 }