chore: do not remove kubeblocks repo when uninstall kb

[ldming]

• fix [BUG] kbcli kb uninstall should not remove kubeblocks from helm repo #542

[ldming]

/cherry-pick release-0.9

[apecloud-bot]

🤖 says: Error cherry-picking.

Auto-merging pkg/cmd/kubeblocks/uninstall.go
CONFLICT (content): Merge conflict in pkg/cmd/kubeblocks/uninstall.go
error: could not apply 81b7b15... chore: do not remove kubeblocks repo when uninstall kb (#566)
hint: After resolving the conflicts, mark them with
hint: "git add/rm ", then run
hint: "git cherry-pick --continue".
hint: You can instead skip this commit with "git cherry-pick --skip".
hint: To abort and get back to the state before "git cherry-pick",
hint: run "git cherry-pick --abort".
hint: Disable this message with "git config advice.mergeConflict false"

[apecloud-bot]

🤖 says: ‼️ cherry pick action failed.
See: https://github.com/apecloud/kbcli/actions/runs/13385524635