SIG UI: Leadership Change

### SIG/WG name:

SIG UI

### Onboarding Lead(s):

kahirokunn (Kahiro Okina)

### Offboarding Lead(s):

None (additional Chair appointment)

### Link to discussion:

https://groups.google.com/g/kubernetes-sig-ui/c/2DuHGvUwiZw

### Prerequisites for new leads:

- [x] Are a [Kubernetes Org member](https://git.k8s.io/community/community-membership.md)
- [ ] Have completed the [Inclusive Open Source Community Orientation course](https://training.linuxfoundation.org/training/inclusive-open-source-community-orientation-lfc102/)

### Onboarding / Offboarding tasks:

- [ ] Updated [sigs.yaml](https://git.k8s.io/community/sigs.yaml) and associated [generated files](https://git.k8s.io/community/generator) (ran `make`). **NOTE:** If offboarding, remember to add to emeritus.
- [ ] Updated [OWNERS_ALIASES](https://git.k8s.io/org/OWNERS_ALIASES) in [kubernetes/org](https://git.k8s.io/org/).
- [ ] Updated [milestone maintainers team](https://git.k8s.io/org/config/kubernetes/sig-release/teams.yaml) in [kubernetes/org](https://git.k8s.io/org/).
- [ ] Checked for and updated any other potential teams in [kubernetes/org](https://git.k8s.io/org/).
- [ ] Updated [OWNERS_ALIASES](https://git.k8s.io/enhancements/OWNERS_ALIASES) in [kubernetes/enhancements](https://github.com/kubernetes/enhancements).
- [ ] Updated [OWNERS_ALIASES](https://git.k8s.io/k8s.io/OWNERS_ALIASES) in [kubernetes/k8s.io](https://git.k8s.io/k8s.io/).
- [ ] Updated feature-approvers in [OWNERS_ALIASES](https://git.k8s.io/kubernetes/OWNERS_ALIASES) in [kubernetes/kubernetes](https://github.com/kubernetes/kubernetes) (when applicable)
- [ ] Updated [membership](https://git.k8s.io/k8s.io//groups/groups.yaml) of the [leads mailing list](https://groups.google.com/a/kubernetes.io/g/leads)
- [ ] Updated membership for any other [mailing list / groups](https://git.k8s.io/k8s.io//groups/).
- [ ] Added to `#chairs-and-techleads` slack channel.
- [ ] Updated ownership of group leads mailing list.
- [ ] Updated ownership of group mailing list.
- [ ] Updated ownership of group calendar.
- [ ] Updated access/teams in 1password. (Contact ContribEx leads to complete)
- [ ] Update permissions for the corresponding Youtube playlists. (Contact [YouTube moderators](https://github.com/kubernetes/community/blob/master/communication/moderators.md#youtube-channel))

### Additional information:

_No response_

### Labels:

/sig ui

Start with the SIG UI leadership checklist, then inspect sigs.yaml, its generated files, and the referenced OWNERS_ALIASES, teams.yaml, and groups.yaml files. Run make where the checklist specifies it and verify each applicable team, mailing list, calendar, access, and playlist update is completed for the new chair. Done means all relevant checklist items are checked and the repository state reflects the leadership change.

Written by the indexing model from the issue text.