core: Media players supporting sound mode cause alexa to fail discovering any devices

The problem

My Marantz receiver (DenonAVR integration) blocks alexa from discovering any devices (also other devices than the Marantz). If I change the supported features of the Marantz from 85949 to 20413 (substract 65536 for SUPPORT_SELECT_SOUND_MODE) alexa works again and discovers all my devices including the Marantz. However obviously that means I lose the sound_mode support of the Marantz which I do use in HomeAssistant (actually written the sound_mode support code of HomeAssisant myself).

This issue was already pointed out in https://github.com/home-assistant/core/issues/34029, and an attempt to fix it was made by @balloob in PR https://github.com/home-assistant/core/pull/36285, but at least for the DenonAVR integration that did not seem to solve the problem.

(I have been having this issue for quite a long time, but was hoping it would get fixed eventually, but it is still there)

Environment

• Home Assistant Core release with the issue: 0.115.6 (but has been gooing on for a longer time)
• Last working Home Assistant Core release (if known): 0.103 I think, I think it got intruduced by PR: https://github.com/home-assistant/core/pull/30159
• Operating environment (OS/Container/Supervised/Core): Core, Linux 5.4.51-v7+, python 3.7.3
• Integration causing this issue: Alexa
• Link to integration documentation on our website: https://www.home-assistant.io/integrations/alexa/

Problem-relevant configuration.yaml

Traceback/Error logs

I do not see any errors/warnings related to alexa

Additional information