fix bytebeat output proxy reaction

other non-number outputs don't show any visible error and convert to NaN.
i didn't notice this when writing the relevant code.

src/audio-worklet/audio-worklet.ts

@@ -281,7 +281,7 @@ class BytebeatProcessor extends AudioWorkletProcessor {
 						// WeakSet.has() works correctly with any input, not just valid WeakKeys
 						// @ts-expect-error
 						if (proxies.has(v)) {
-							throw new TypeError("can't convert proxy to number");
+							return NaN;
 						} else {
 							// this does not cast BigInt, which matches the behaviour of
 							// placing it directly into a typed array