feat(presets/merge-confidence): Merge Confidence badges on-by-default for...

feat(presets/merge-confidence): Merge Confidence badges on-by-default for .NET, PHP and Ruby (#24221)

Co-authored-by: Rhys Arkins <rhys@arkins.net>
Co-authored-by: Michael Kriese <michael.kriese@visualon.de>
Co-authored-by: HonkingGoose <34918129+HonkingGoose@users.noreply.github.com>