RouteHandlerServices doesn't have route string syntax

### Is there an existing issue for this?

- [x] I have searched the existing issues

### Describe the bug

RouteHandlerServices doesn't have route string syntax

### Expected Behavior

_No response_

### Steps To Reproduce

_No response_

### Exceptions (if any)

_No response_

### .NET Version

_No response_

### Anything else?

_No response_