chore(vpcv2): fix doc issue due to IRoute

[shikha372]

Issue # (if applicable)

Closes #NA.

Reason for this change

Fixes the doc job build failure for python docs failing with the error in main pipeline

TypeError: Cannot create a consistent method resolution
order (MRO) for bases IConstruct, IResource, Protocol

Issue seemed to have been occured due to IRoute interface extending both IConstruct and IResource, we don't need it as IResource already extends IConstruct and IConstruct extends IDependable.

Description of changes

Renamed IRoute to IRouteV2(as previous release) , we already have an interface in the main lib with name IRoute for apigateway

Description of how you validated changes

Deployed in test-pipeline for verification using

git fetch origin pull/31464/head
git push -f origin FETCH_HEAD:test-main-pipeline

Checklist

• [x] My code adheres to the CONTRIBUTING GUIDE and DESIGN GUIDELINES

---

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

[aws-cdk-automation]

AWS CodeBuild CI Report

• CodeBuild project: AutoBuildv2Project1C6BFA3F-wQm2hXv2jqQv
• Commit ID: 775bc9fee804c9515837a47f50fe00a1ba368b1d
• Result: SUCCEEDED
• Build Logs (available for 30 days)

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[mergify[bot]]

Thank you for contributing! Your pull request will be updated from main and then merged automatically (do not update manually, and be sure to allow changes to be pushed to your fork).

[shikha372]

@mergifyio update

[mergify[bot]]

update

☑️ Nothing to do

- [ ] `#commits-behind > 0` [📌 update requirement] - [X] `-closed` [📌 update requirement] - [X] `-conflict` [📌 update requirement] - [X] `queue-position = -1` [📌 update requirement]

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