[WebCodec | AudioEncoder ] Test incorrectly assuming that a bitrate is too high

[jyavenard]

wpt/webcodecs/audio-encoder-config.https.any.js

Lines 51 to 56 in 1f7679a

	comment: 'Bit rate too big',
	config: {
	codec: 'opus',
	sampleRate: 8000,
	numberOfChannels: 2,
	bitrate: 6e9,

The test checks that a bitrate of 6e9 is too big.

But the bitrate is a long long https://w3c.github.io/webcodecs/#dom-audioencoderconfig-bitrate ; and 6e9 fits in that range.

Either the test should be removed or the spec amended to make it a plain long instead.