(javascript) regression: “for await“ highlighted as function instead of keyword

[wolfgang42]

Describe the issue
In the statement for await (foo) {}, the keyword await is being incorrectly highlighted as a function since 063876f (#3940).

Which language seems to have the issue?
JavaScript

Are you using highlight or highlightAuto?
highlight

Sample Code to Reproduce

for await (foo) {}

Expected behavior
for await are both highlighted as keywords.

Additional context

I upgraded highlight.js and this stopped working. I bisected the problem to 063876f (#3940), but I don’t really understand the internals of highlight.js well enough to figure out why that code is being triggered in this position or what to do about it.

[wolfgang42]

(CC @cyfung1031 / @joshgoebel as author/committer of previous PR.)