Fix typecheck

Author: bogdan

lib/js_routes/configuration.rb

@@ -56,7 +56,7 @@ def initialize(attributes = nil)
       @compact = T.let(false, T::Boolean)
       @serializer = T.let(nil, T.nilable(String))
       @special_options_key = T.let("_options", Literal)
-      @application = T.let(-> { Rails.application }, ApplicationCaller)
+      @application = T.let(T.unsafe(-> { Rails.application }), ApplicationCaller)
       @module_type = T.let('ESM', T.nilable(String))
       @documentation = T.let(true, T::Boolean)
       @optional_definition_params = T.let(false, T::Boolean)
@@ -166,7 +166,7 @@ def verify
     sig { returns(T.proc.returns(String)) }
     def default_banner
       -> () {
-        app = application.is_a?(Proc) ? application.call : application
+        app = application.is_a?(Proc) ? T.unsafe(application).call : application
         <<~TXT
           File generated by js-routes #{JsRoutes::VERSION} on #{Time.now}
           Based on Rails #{Rails.version} routes of #{app.class}