astraldawn

Adjust name validation in pkg/chart/metadata to use filepath.IsLocal

2

**What this PR does / why we need it**: Closes #12868 **Special notes for your reviewer**: **If applicable**: - [ ] this PR contains documentation - [x] this PR contains...

Helm 3.14.1+ flags charts from namespaced mirrors as invalid due to validation error on chart.metadata.name

6

## Description When using helm `3.14.1` or later, running `helm repo update` gives this error / warning message: ``` index.go:370: skipping loading invalid entry for chart "bitnami/kibana" "10.13.0" from https://artifact.corp.org/artifactory/helm:...