fix(GlPath): Keep path text white in dark mode

mentioned in commit 57613a71

mentioned in merge request gitlab-org/frontend/pajamas-adoption-scanner!122 (merged)

mentioned in merge request status-page!715 (merged)

mentioned in merge request gitlab!112873 (merged)

mentioned in merge request gitlab!112998 (merged)

mentioned in merge request status-page!716 (merged)

mentioned in merge request gitlab-docs!3595 (merged)

mentioned in merge request gitlab-org/gitlab-services/design.gitlab.com!3279 (merged)

mentioned in merge request gitlab-org/gitlab-services/design.gitlab.com!3291 (merged)