fix(android): drop geolocator for a native LocationManager channel

Removes the geolocator dependency, which transitively embedded
com.google.android.gms.* (play-services-location) — proprietary classes
that F-Droid's scanner rejects. The optional coarse-location button now
talks to Android's own LocationManager over a small platform channel
(org.comunes.tane/coarse_location): permission prompt, single coarse fix
with a 12s timeout, last-known fallback, null on any failure. Behavior
is unchanged and the CoarseLocationProvider interface is preserved, so
the UI, i18n and widget tests need no changes.

Also sets dependenciesInfo.includeInApk/Bundle = false so the AGP
dependency-metadata block (also flagged by F-Droid) is not embedded.
Neither change affects the Google Play build.

apps/app_seeds/windows/flutter/generated_plugin_registrant.cc

@@ -9,7 +9,6 @@
 #include <connectivity_plus/connectivity_plus_windows_plugin.h>
 #include <file_selector_windows/file_selector_windows.h>
 #include <flutter_secure_storage_windows/flutter_secure_storage_windows_plugin.h>
-#include <geolocator_windows/geolocator_windows.h>
 #include <sqlcipher_flutter_libs/sqlite3_flutter_libs_plugin.h>
 #include <url_launcher_windows/url_launcher_windows.h>
 
@@ -20,8 +19,6 @@ void RegisterPlugins(flutter::PluginRegistry* registry) {
       registry->GetRegistrarForPlugin("FileSelectorWindows"));
   FlutterSecureStorageWindowsPluginRegisterWithRegistrar(
       registry->GetRegistrarForPlugin("FlutterSecureStorageWindowsPlugin"));
-  GeolocatorWindowsRegisterWithRegistrar(
-      registry->GetRegistrarForPlugin("GeolocatorWindows"));
   Sqlite3FlutterLibsPluginRegisterWithRegistrar(
       registry->GetRegistrarForPlugin("Sqlite3FlutterLibsPlugin"));
   UrlLauncherWindowsRegisterWithRegistrar(