Ensure compatibility with Chrome's new browser namespace

[aklinker1]

https://groups.google.com/a/chromium.org/g/chromium-extensions/c/gK1Sd57p4go?pli=1

Just double check that @wxt-dev/browser still works on all browsers.

[Timeraa]

From what I saw in the API's we check browser || chrome so I think that should work from my standpoint but you know the code better than me

[aklinker1]

Yes, it should be fine, but I wanna at least run something on chrome canary to test it out.

wxt/packages/browser/src/index.mjs

Lines 2 to 4 in e1b7d60

	export const browser = globalThis.browser?.runtime?.id
	? globalThis.browser
	: globalThis.chrome;