fix: default import package.json for spec compatibility

[trivikr]

Issue #, if available:
Fixes: #1504
Replaces: #1503

Description of changes:
default import package.json for spec compatibility

Special thanks to Co-author @rvaronos

By submitting this pull request, I confirm that you can use, modify, copy, and redistribute this contribution, under the terms of your choice.

[codecov-commenter]

Codecov Report

Merging #1505 into master will decrease coverage by 0.16%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #1505      +/-   ##
==========================================
- Coverage   79.80%   79.63%   -0.17%     
==========================================
  Files         298      299       +1     
  Lines       11502    11635     +133     
  Branches     2475     2483       +8     
==========================================
+ Hits         9179     9266      +87     
- Misses       2323     2369      +46     

Impacted Files	Coverage Δ
...l_tests/aws-json/commands/EmptyOperationCommand.ts	90.00% <0.00%> (-10.00%)	⬇️
...ts/aws-query/commands/NoInputAndNoOutputCommand.ts	90.00% <0.00%> (-10.00%)	⬇️
.../aws-restxml/commands/NoInputAndNoOutputCommand.ts	90.00% <0.00%> (-10.00%)	⬇️
...aws-restjson/commands/NoInputAndNoOutputCommand.ts	90.00% <0.00%> (-10.00%)	⬇️
protocol_tests/aws-ec2/commands/XmlBlobsCommand.ts	95.00% <0.00%> (-5.00%)	⬇️
protocol_tests/aws-ec2/commands/XmlEnumsCommand.ts	95.00% <0.00%> (-5.00%)	⬇️
protocol_tests/aws-ec2/commands/XmlListsCommand.ts	95.00% <0.00%> (-5.00%)	⬇️
...rotocol_tests/aws-query/commands/XmlMapsCommand.ts	95.00% <0.00%> (-5.00%)	⬇️
...otocol_tests/aws-query/commands/XmlBlobsCommand.ts	95.00% <0.00%> (-5.00%)	⬇️
...otocol_tests/aws-query/commands/XmlEnumsCommand.ts	95.00% <0.00%> (-5.00%)	⬇️
... and 121 more

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[trivikr]

This PR would be set to ready for review once smithy-lang/smithy-typescript#209 is ready

[github-actions]

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