theming: respect system theme by default

src/fe-gtk/theme/tests/test-theme-manager-dispatch-routing.c

@@ -23,6 +23,7 @@
 #include <string.h>
 
 #include "../theme-manager.h"
+#include "../theme-policy.h"
 #include "../../../common/zoitechat.h"
 #include "../../../common/zoitechatc.h"
 
@@ -77,6 +78,15 @@ gboolean theme_policy_system_prefers_dark (void)
 	return FALSE;
 }
 
+void theme_policy_init (void)
+{
+}
+
+void theme_policy_set_appearance_changed_callback (ThemePolicyAppearanceChangedFunc callback)
+{
+	(void) callback;
+}
+
 gboolean theme_application_apply_mode (unsigned int mode, gboolean *palette_changed)
 {
 	(void) mode;