fix builds that were broken by new terser 4.6.8 version

[Amplifiyer]

_Issue #, if available:_terser/terser#624

Description of changes:

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

[sammartinez]

LGTM 🌮

[manueliglesias]

LGTM 🚀

[codecov]

Codecov Report

Merging #5233 into master will not change coverage by %.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #5233   +/-   ##
=======================================
  Coverage   73.17%   73.17%           
=======================================
  Files         193      193           
  Lines       11450    11450           
  Branches     2221     2305   +84     
=======================================
  Hits         8379     8379           
+ Misses       2923     2907   -16     
- Partials      148      164   +16     

Impacted Files	Coverage Δ
packages/auth/src/OAuth/OAuth.ts	48.12% <0.00%> (ø)
packages/datastore/src/sync/outbox.ts	25.00% <0.00%> (ø)
packages/datastore/src/storage/storage.ts	67.59% <0.00%> (ø)
packages/core/src/OAuthHelper/GoogleOAuth.ts	31.25% <0.00%> (ø)
packages/xr/src/Providers/SumerianProvider.ts	47.55% <0.00%> (ø)
packages/core/src/OAuthHelper/FacebookOAuth.ts	34.09% <0.00%> (ø)
packages/datastore/src/sync/processors/sync.ts	17.33% <0.00%> (ø)
...ackages/datastore/src/storage/adapter/indexeddb.ts	73.26% <0.00%> (ø)
...ackages/pubsub/src/Providers/AWSAppSyncProvider.ts	66.66% <0.00%> (ø)
...ages/datastore/src/sync/processors/subscription.ts	43.91% <0.00%> (ø)
... and 2 more

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[github-actions]

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