Pressing ctrl-c when quarto is updating breaks installation

I installed Quarto by cloning this repo and running ./configure-macos.sh. Sometimes I update with a git pull, and then when I actually use quarto, it updates Deno. If I press ctrl-c when it's in the middle of updating, it breaks my quarto installation. For example:

$ quarto render
Bootstrapping Deno...
~/nobackup/quarto-cli/package ~/nobackup/quarto-cli
~/nobackup/quarto-cli/package/dist ~/nobackup/quarto-cli/package ~/nobackup/quarto-cli
~/nobackup/quarto-cli/package/dist/bin ~/nobackup/quarto-cli/package/dist ~/nobackup/quarto-cli/package ~/nobackup/quarto-cli
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100   667  100   667    0     0   2533      0 --:--:-- --:--:-- --:--:--  2605
 46 28.7M   46 13.3M    0     0  5045k      0  0:00:05  0:00:02  0:00:03 6572k^C

$ quarto render
-bash: /usr/local/bin/quarto: No such file or directory

Running ./configure-macos.sh fixes it, but it would be nice if it didn't break in the first place.

Start by reading configure-macos.sh and tracing the update/bootstrap path used when quarto render updates Deno. Reproduce the interrupted update if possible, then verify that pressing Ctrl-C does not leave the quarto command unavailable and that a subsequent render still works.