[hotfix]: Fix Another Issue with Nest Router Package and Swagger Integration.

[shekohex]

PR Checklist

Please check if your PR fulfills the following requirements:

• The commit message follows our guidelines: https://github.com/nestjs/nest/blob/master/CONTRIBUTING.md
• Tests for the changes have been added (for bug fixes / features)
• Docs have been added / updated (for bug fixes / features)

PR Type

What kind of change does this PR introduce?

[x] Bugfix
[ ] Feature
[ ] Code style update (formatting, local variables)
[x] Refactoring (no functional changes, no api changes)
[ ] Build related changes
[ ] CI related changes
[ ] Other... Please describe:

What is the current behavior?

Issue Number: nestjsx/nest-router#3

The Issue was previously fixed at #104 , but recently some developers are reporting issue with swagger-ui as described here nestjsx/nest-router#3 (comment). the issue is simply solved by just rerun the route validation function on the route if it has a modulePath.

What is the new behavior?

This issue is now fixed and now @nestjs/swagger should provide the correct ui route

Does this PR introduce a breaking change?

[ ] Yes
[x] No

[Joel-Raju]

@kamilmysliwiec, could you merge this PR and release an updated version soon?

Thank you for the awesome work on NestJS.
Joel

[lock]

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