Allow DefaultOff detectors to be used exclusively

Nobody has claimed this yet.

I would like to use UvLock exclusively due to it being the detector with the best accuracy. As PipReport (and Pip) detectors seems to be highly inaccurate

PipReport - 8 dependencies found, 8 Explicitly Referenced
Pip - 9 dependencies found, 8 Explicitly Referenced
UvLock - 17 dependencies found, 2 Explicitly Referenced

# Reproduction steps

Create the following file
```
# pyproject.toml

[project]
name = "hello_world"
version = "1.0.0"
description = "A simple Hello World Python project."
requires-python = ">=3.10"
dependencies = [
"orjson>3.10.0",
"Flask==3.1.1"
]

[dependency-groups]
dev = [
"pytest"
]
```

Run the commands
`uv sync`
`component-detection scan --SourceDirectory . --ManifestFile output.json --DetectorArgs UvLock=EnableIfDefaultOff`

# Expected
Successful manifest generation using `UvLock` as the only detector

# Actual
```
An error occurred while executing the command
Microsoft.ComponentDetection.Orchestrator.Exceptions.InvalidDetectorFilterException: Detector 'UvLock' was not found
at Microsoft.ComponentDetection.Orchestrator.Services.DetectorRestrictionService.ApplyRestrictions(DetectorRestrictions restrictions, IEnumerable`1 detectors)
at Microsoft.ComponentDetection.Orchestrator.Services.ScanExecutionService.ExecuteScanAsync(ScanSettings settings)
at Microsoft.ComponentDetection.Orchestrator.Commands.ScanCommand.ExecuteAsync(CommandContext context, ScanSettings settings)
at Spectre.Console.Cli.CommandExecutor.Execute(CommandTree leaf, CommandTree tree, CommandContext context, ITypeResolver resolver, IConfiguration configuration) in /_/src/Spectre.Console.Cli/Internal/CommandExecutor.cs:line 166
```

Reproduce the scan with the provided pyproject.toml, uv sync, and DetectorArgs command. Start at DetectorRestrictionService.ApplyRestrictions and the scan execution path shown in the error; done means UvLock is recognized and can run as the only detector without InvalidDetectorFilterException.

Written by the indexing model from the issue text.