`dotnet package search` should honor `packageSourceMapping` settings

[julealgon]

NuGet Product(s) Affected

dotnet.exe

Current Behavior

dotnet package search ignores the packageSourceMapping settings in nuget.config and searches for the specified package on every single source regardless of the value passed in.

Desired Behavior

The command should honor packageSourceMapping settings and only search for the specified term on package sources that match that term.

Additional Context

No response