Closes #10230

Co-authored-by: Michael Kriese <michael.kriese@visualon.de>

Co-authored-by: Renovate Bot <bot@renovateapp.com>
Co-authored-by: Rhys Arkins <rhys@arkins.net>
Co-authored-by: Michael Kriese <michael.kriese@visualon.de>

Removes support for the ignoreNpmrcFile config option.

BREAKING CHANGE: ignoreNpmrcFile is no longer supported. Use an empty string for config.npmrc instead.

Adds an extra migration step after resolving config in order to migrate nested presets.

Closes #8579

This reverts commit d1d7901a.

This reverts commit d2a5b716.

Co-authored-by: Rhys Arkins <rhys@arkins.net>

Co-authored-by: Renovate Bot <bot@renovateapp.com>
Co-authored-by: Jamie Magee <jamie.magee@gmail.com>
Co-authored-by: Michael Kriese <michael.kriese@visualon.de>
Co-authored-by: Jamie Magee <JamieMagee@users.noreply.github.com>