Make `--interactive` not require boosting MSBuild logger verbosity to `minimal` from `quiet`

[baronfel]

Is your feature request related to a problem? Please describe.

In run we force override the verbosity of the MSBuild logger used for implicit build from quiet to minimal so that outputs from NuGet related to authentication will be shown. This leads to chattier builds when --interactive is enabled - which is now quite often.

Describe the solution you'd like

Instead, MSBuild should be able to write auth-related messages at any verbosity, and we should keep quiet for implicit run builds in the SDK.