TASK: Replace NavigateUrl() with an INavigationManager implementation

[johnhenley]

Description of task

As part of our modernization efforts, we are consolidating the URL handling that is spread throughout the module's codebase.
We also want to stay aligned with DNN platform concepts. That includes modernizing our code from using NavigateUrl() to using dependency injection and our own INavigationManager.

For context, see
dnnsoftware/Dnn.Platform#3153

What general area(s)/component(s) are affected?

** check any / all **
[] User interface
[] Database schema
[X] Business Logic
[] Dependencies
[] Installation/manifest

Additional context

Add any other context or screenshots about the task here.