Allow to retain fetchEvent on all wasi 0.2.x versions

[karthik2804]

Fixes the case where the guest wit states wasi:http/incoming-handler@0.2.0 but the engine exports wasi:http/incoming-handler@0.2.2.

[karthik2804]

Are we okay bumping this to 4s? I see the last few commits have also failed on it.

ComponentizeJS/test/builtins/performance.js

Lines 24 to 27 in d8dd995

	// TODO: fix back to half a millisecond when Weval fix is added
	if (time > 3) {
	throw new Error('took more than half a millisecond - ' + time + ' ms');
	}

[guybedford]

Yes, bumping CI to 4 or 5 seconds would be fine.