Pushed by padenot@mozilla.com: https://hg.mozilla.org/integration/autoland/rev/a42d320c192c Accept any iterable for parameterDescriptors in AudioWorkletGlobalScope.registerProcessor(). r=karlt https://hg.mozilla.org/integration/autoland/rev/1c13ea72af53 Add a WPT to check that various iterable work to specify AudioParam descriptors in AudioWorkletProcessor definition. r=karlt https://hg.mozilla.org/integration/autoland/rev/c1e0df633ac8 Allow not having a parameterDescriptor getter in an AudioWorkletProcessor. r=karlt https://hg.mozilla.org/integration/autoland/rev/20e21af0f1e1 Explicitly test in WPT that AudioWorkletProcessor can have no parameterDescriptor getters. r=karlt https://hg.mozilla.org/integration/autoland/rev/d3267e8893ba Expect WPT failures for AudioParamDescriptor tests related to automationRate. r=karlt https://hg.mozilla.org/integration/autoland/rev/af901d3bf5a5 Add a WPT to check that having two parameters with the same name in parameterDescriptors throws. r=karlt https://hg.mozilla.org/integration/autoland/rev/e96390a0bb9a Update test_audioWorkletGlobalScopeRegisterProcessor.html with new error messages and error type. r=karlt

Created web-platform-tests PR https://github.com/web-platform-tests/wpt/pull/22490 for changes under testing/web-platform/tests

Upstream web-platform-tests status checks passed, PR will merge once commit reaches central.

Upstream PR merged by moz-wptsync-bot