fix: resolve all warnings (59 warnings → 0)

- Fix bloc_lint include_file_not_found by removing unneeded include
- Add explicit type annotations to callback parameters in activeFires.dart
- Add explicit type parameters to MaterialPageRoute<void> constructors
- Add explicit type parameters to Future<void>.delayed() calls
- Fix error handler signatures: (Object err, StackTrace stack)
- Remove 'const' from genericMap() widget construction (StatefulWidget)

All strict analysis errors and warnings now resolved (0 errors, 0 warnings).
Remaining 339 issues are info-level linting suggestions.

lib/fileUtils.dart

@@ -36,7 +36,10 @@ Future<String> getFileNameOfLang(
 // https://github.com/flutter/flutter/issues/15325
 Future<bool> assetNotExists(String asset) {
   print('Does not exists $asset ?');
-  return rootBundle.load(asset).then((_) => false).catchError((err, stack) {
+  return rootBundle
+      .load(asset)
+      .then((_) => false)
+      .catchError((Object err, StackTrace stack) {
     print(err);
     print(stack);
     return true;