Added class clearance fixes and improvements

linux/flutter/generated_plugin_registrant.cc

@@ -7,12 +7,16 @@
 #include "generated_plugin_registrant.h"
 
 #include <dynamic_color/dynamic_color_plugin.h>
+#include <file_selector_linux/file_selector_plugin.h>
 #include <flutter_secure_storage_linux/flutter_secure_storage_linux_plugin.h>
 
 void fl_register_plugins(FlPluginRegistry* registry) {
   g_autoptr(FlPluginRegistrar) dynamic_color_registrar =
       fl_plugin_registry_get_registrar_for_plugin(registry, "DynamicColorPlugin");
   dynamic_color_plugin_register_with_registrar(dynamic_color_registrar);
+  g_autoptr(FlPluginRegistrar) file_selector_linux_registrar =
+      fl_plugin_registry_get_registrar_for_plugin(registry, "FileSelectorPlugin");
+  file_selector_plugin_register_with_registrar(file_selector_linux_registrar);
   g_autoptr(FlPluginRegistrar) flutter_secure_storage_linux_registrar =
       fl_plugin_registry_get_registrar_for_plugin(registry, "FlutterSecureStorageLinuxPlugin");
   flutter_secure_storage_linux_plugin_register_with_registrar(flutter_secure_storage_linux_registrar);

linux/flutter/generated_plugins.cmake

@@ -4,6 +4,7 @@
 
 list(APPEND FLUTTER_PLUGIN_LIST
   dynamic_color
+  file_selector_linux
   flutter_secure_storage_linux
 )