fix: Correct how configmap and secrets paths are parsed in the CLI

[banjoh]

Description, Motivation and Context

When passing a secret/<namespace-name>/<secret-name>/<data-key> or configmap/<namespace-name>/<configmap-name>/<data-key>, the <data-key> part causes both preflight and support-bundle applications to error. This is because the <data-key> part is not expected due to a recent refactoring change.. This PR fixes that

Fixes: #1374

Checklist

• New and existing tests pass locally with introduced changes.
• Tests for the changes have been added (for bug fixes / features)
• The commit message(s) are informative and highlight any breaking changes
• Any documentation required has been added/updated. For changes to https://troubleshoot.sh/ create a PR here

Does this PR introduce a breaking change?

• Yes
• No