[Proposal] fix(prober): return "not supported" if browser API take too long

[Florent-Bouisset]

Calling navigator.requestMediaKeySystemAccess() can hang infinitly on some devices. (Noticed on a windows device in an app under WebView v2).
As a result, mediaCapabilitiesProber.getCompatibleDRMConfigurations() hangs infinitly and does not return the supported key systems.

To handle such case, I propose to add a timeout when testing such browser APIs, and to consider that the device has not the capabilities for this media configuration if no response is given in a reasonable time (I have set it to 30 seconds).

I added this behavior for the following browsers API:

"isTypeSupported"
"isTypeSupportedWithFeatures"
"matchMedia"
"decodingInfos"
"requestMediaKeySystemAccess"
"getStatusForPolicy";

[peaBerberian]

In what scenario does that happen? Everytime the check should fail on those devices?

Why targeting only the mediaCapabilitiesProber if the issue is with the navigator.requestMediaKeySystemAccess call in general?

30s in any case is a lot, is the wanted experience to hang for 30 seconds in that case?