fix(react-router): Ensure source map upload fails silently if Sentry CLI fails#17081

Lms24 wants to merge 2 commits intodevelopgetsentry/sentry-javascript:developfrom

lms/fix-react-router-uploadSourceMaps-rejectOnErrorgetsentry/sentry-javascript:lms/fix-react-router-uploadSourceMaps-rejectOnErrorCopy head branch name to clipboard