%sag and %sav blits no longer give you a download prompt

[Fang-]

The logic for them makes use of Buffer, but for whatever reason, with the glob that's on livenet right now:

Failed to call subscription event callback ReferenceError: Buffer is not defined

webterm/ui/lib/blit.ts

Lines 40 to 45 in ed7f8c5

	} else if ('sag' in blit || 'sav' in blit) {
	const sav = ('sag' in blit) ? blit.sag : blit.sav;
	const name = sav.path.split('/').slice(-2).join('.');
	const buff = Buffer.from(sav.file, 'base64');
	const blob = new Blob([buff], { type: 'application/octet-stream' });
	saveAs(blob, name);