[wp-trac] [WordPress Trac] #52941: Remove `@babel/polyfill` in favor of `core-js/stable`.

[WordPress Trac]

#52941: Remove `@babel/polyfill` in favor of `core-js/stable`.
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 Reporter:  desrosj           |      Owner:  (none)
     Type:  task (blessed)    |     Status:  new
 Priority:  normal            |  Milestone:  Awaiting Review
Component:  Build/Test Tools  |    Version:
 Severity:  normal            |   Keywords:
  Focuses:                    |
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 The `@babel/polyfill` is deprecated and should be replaced with core-
 js/stable:
 https://babeljs.io/docs/en/babel-polyfill.

 A related issue in Gutenberg with more details:
 https://github.com/WordPress/gutenberg/issues/22417.

 Copied over from #52854 after it was brought up by @gziolo.

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Ticket URL: <https://core.trac.wordpress.org/ticket/52941>
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