Regression: CLI "--parameters" are ignored

[pblasucci]

Found a regression in v8 (n.b. v7.2.7 does not exhibit this behavior).

Expected Behavior

Values passed via the --parameters argument override values set in .fsproj (which, in turn override hard-coded default values).

Actual Behavior

Values passed via the --parameters argument are ignored.

Steps to reproduce

1. invoke dotnet fsdocs watch --projects <path/to/fsproj> --parameters fsdocs-navbar-position fixed-left
2. observe in the console output that mulitple values are listed for a given parameter (the default, from .fsproj (if given), from CLI)
3. observe in the generated output that the value from the .fsproj file is used (if present) or the default value is used.

Environment

• .NET SDK version: 5.0.102
• Operating System: Pop!_OS 20.10 (Ubuntu-derivative)