API Gateway/Lambda template endpoints failing locally

**Describe the bug**
`ValuesController` GET endpoints aren't reached properly when running locally. For example, ".../api/values/get" actually uses the ".../api/values/get/{id}" endpoint and returns `value` in the response, rather than `["value1", "value2"]`, and POST requests fail to bind JSON bodies to function models which result in null reference exceptions in the function body.

**To Reproduce**
1. Create a new AWS Serverless Application (.NET Core - C#) project using the "ASP.NET Core Web API" template
2. Run the project locally
3. Test the controller endpoints using a browser/Postman

**Expected behavior**
All endpoints respond as expected and bind successfully.

- Visual Studio Version: 2022
- AWS Toolkit for Visual Studio Version: 1.28.0.0

Create the AWS Serverless Application using the ASP.NET Core Web API template and run it locally, then exercise the ValuesController GET and POST endpoints with a browser or Postman. Compare the observed route selection and JSON model binding with the expected behavior; done means the collection GET, item GET, and POST requests reach the intended endpoints and bind request bodies without null-reference failures.

Written by the indexing model from the issue text.