Force 433.92 and remove metadata check (#2599)

* Force 433.92 and remove metadata check: we already know the frequency for all files so don't need a million metadata files to match.
* Variable fixes and move to header

firmware/application/external/cvs_spam/cvs_spam.hpp

@@ -16,6 +16,9 @@ using namespace portapack;
 
 namespace ui::external_app::cvs_spam {
 
+constexpr uint32_t SAMPLE_RATE = 250000;
+constexpr uint64_t TARGET_FREQUENCY = 433920000;
+
 class CVSSpamView : public View {
    public:
     explicit CVSSpamView(NavigationView& nav);