textDecoder.decode() doesn't accept SharedArrayBuffers

[bmeck]

• Version: v14.0.0-pre
• Platform: OSX
• Subsystem: util

What steps will reproduce the bug?

new TextDecoder().decode(new SharedArrayBuffer(0));

How often does it reproduce? Is there a required condition?

Always reproduces.

What is the expected behavior?

Per https://encoding.spec.whatwg.org/#dom-textdecoder-decode it should accept SharedArrayBuffers and act like

new TextDecoder().decode(new ArrayBuffer(0));

What do you see instead?

TypeError [ERR_INVALID_ARG_TYPE]: The "input" argument must be an instance of ArrayBuffer or ArrayBufferView. Received an instance of SharedArrayBuffer

Additional information