Read global element variable at creation time of the promise,…

[kalanzun]

…not during resolve.

At resolve time, the global variable might already have changed.

Fix #1565

[kalanzun]

I did not add a test. To actually test it, we would need to add jupyter lab and playwright to the dev environment. That might not be worth it?

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 94.54%. Comparing base (99792e5) to head (44438d6).
Report is 1 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #1566   +/-   ##
=======================================
  Coverage   94.54%   94.54%           
=======================================
  Files          28       28           
  Lines        5848     5848           
  Branches     1166     1166           
=======================================
  Hits         5529     5529           
  Misses        193      193           
  Partials      126      126           

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[jmwright]

Looks good. Thanks @kalanzun and @adam-urbanczyk