fix(dawarich): serve .mjs MapLibre modules as JavaScript (#18304)

Since Dawarich 1.15.1 the importmap pins maplibre-gl to
/maplibre/<version>/maplibre-gl.mjs in public/. Debian's nginx
mime.types has no mjs entry, so the vhost served it as
application/octet-stream and browsers refused to load the module:
blank map, map controllers fail.

Add a .mjs location (text/javascript, as Rails serves it upstream) to
the install heredoc, and insert it into existing vhosts from
update_script() before the release check, applied via nginx_enable_site.

Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>

ct/dawarich.sh

@@ -33,6 +33,13 @@ function update_script() {
 
   ensure_dependencies libgeos++-dev libxml2-dev libxslt-dev libjemalloc-dev
 
+  if [[ -f /etc/nginx/sites-available/dawarich.conf ]] && ! grep -q '\.mjs\$' /etc/nginx/sites-available/dawarich.conf; then
+    msg_info "Fixing MapLibre delivery in Nginx"
+    sed -i '/location ~ \^\/(assets|packs)\/ {/i\    location ~ \\.mjs$ {\n        types { }\n        default_type text/javascript;\n        try_files $uri @rails;\n    }\n' /etc/nginx/sites-available/dawarich.conf
+    nginx_enable_site dawarich.conf
+    msg_ok "Fixed MapLibre delivery in Nginx"
+  fi
+
   if check_for_gh_release "dawarich" "Freika/dawarich"; then
     msg_info "Stopping Services"
     systemctl stop dawarich-web dawarich-worker

install/dawarich-install.sh

@@ -150,6 +150,12 @@ server {
     root /opt/dawarich/app/public;
     client_max_body_size 100M;
 
+    location ~ \.mjs\$ {
+        types { }
+        default_type text/javascript;
+        try_files \$uri @rails;
+    }
+
     location ~ ^/(assets|packs)/ {
         expires max;
         add_header Cache-Control "public, immutable";