[desktop] Reset speed mode on game shutdown (#3613)

Closes #3602

Signed-off-by: crueter <crueter@eden-emu.dev>
Reviewed-on: https://git.eden-emu.dev/eden-emu/eden/pulls/3613
Reviewed-by: CamilleLaVey <camillelavey99@gmail.com>
Reviewed-by: Lizzie <lizzie@eden-emu.dev>
Reviewed-by: MaranBr <maranbr@eden-emu.dev>

src/yuzu/main_window.h

@@ -464,6 +464,7 @@ private:
     void OpenPerGameConfiguration(u64 title_id, const std::string& file_name);
     bool CheckFirmwarePresence();
     void SetFirmwareVersion();
+    void SetFPSSuffix();
     void ConfigureFilesystemProvider(const std::string& filepath);
     /**
      * Open (or not) the right confirm dialog based on current setting and game exit lock