Use UseMaui=true in a razor component breaks the _content/PackageId

### Description

Adding `true` to a razor component library causes the static we assets not to be packaged correctly.

I think this has to do with the fact our maui blazor targets assume an app and thus force set the BasePath to be `/` instead of first checking the context - final app or library,

### Steps to Reproduce

1. Create a maui blazor app that references a plain razor component library
2. Observe a successful run
3. Add UseMaui=true to the razor compoent
4. Observe that the razor component no longer loads

### Expected Behavior

### Actual Behavior

### Basic Information

- Version with issue:
- Last known good version:
- IDE:
- Platform Target Frameworks:
- iOS:
- Android:
- UWP:
- Android Support Library Version:
- Nuget Packages:
- Affected Devices:

### Screenshots

### Reproduction Link

### Workaround

Start by reproducing the issue with a .NET MAUI Blazor app referencing a plain Razor component library, then add true to the library. Inspect the MAUI Blazor targets and how they set BasePath for the final app versus the library. Done means the component loads and its _content/PackageId static web assets are packaged correctly.

Written by the indexing model from the issue text.