HTTP triggered functions crash on Mac with Grpc.Core.RpcException

HTTP triggered functions crash on Mac OS with this exception:

`Unhandled exception. Grpc.Core.RpcException: Status(StatusCode="Internal", Detail="Error starting gRPC call. HttpRequestException: Requesting HTTP version 2.0 with version policy RequestVersionOrHigher while unable to establish HTTP/2 connection.", DebugException="System.Net.Http.HttpRequestException: Requesting HTTP version 2.0 with version policy RequestVersionOrHigher while unable to establish HTTP/2 connection.")`

This is happening for any HTTP triggered functions. Even with the **Http Trigger template**. Same codebase works on Windows 10 and on Azure.

**Steps to reproduce the error:**

1. Create a new project with `func init MyProjFolder --worker-runtime dotnet-isolated`
2. Add an HTTP trigger with `func new --template "Http Trigger" --name MyHttpTrigger`
3. Navigate to MyProjFolder and start the function with `func start`

**Environment details:**

- Azure Function Core Tools version: 4
- .NET versions: 7 and 8 (isolated)
- OS: macOS Sonoma version 1.4.12
- CPU architecture: x64
- worker model: dotnet-isolated

Reproduce the failure with the listed `func init`, `func new`, and `func start` commands on macOS using the dotnet-isolated worker. Compare the HTTP/2 and gRPC startup behavior with the stated Windows and Azure environments. Done means an HTTP-triggered function starts and handles requests without the reported `Grpc.Core.RpcException`.

Written by the indexing model from the issue text.