fix: externalResouces should also work globally

[ghiscoding]

• fixes a regression brought up in issue Shared module gridOptions seetings not preserve in page module #1329 even though the issue was brought for the new v7, this regression was also pushed on last v6.6.5 so a fix is necessary on v6 as well

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

❗ No coverage uploaded for pull request base (version6@d5e6060). Click here to learn what that means.

Additional details and impacted files

@@             Coverage Diff              @@
##             version6     #1330   +/-   ##
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  Coverage            ?   100.00%           
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  Files               ?         7           
  Lines               ?       909           
  Branches            ?       304           
============================================
  Hits                ?       909           
  Misses              ?         0           
  Partials            ?         0           

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