A private field named `#await` made the regex-literal check extract
the bare word `await`, so the scanner classified the `/` after it as
a regex start instead of division. That let the fake regex literal
mask a real `vi.waitFor(` or `expect.poll(` call on the same line.
Widen the word extraction to include a leading `#`, so a private
field's token (`#await`) never equals the bare keyword `await`.
Co-authored-by: Paperclip <noreply@paperclip.ing>
