[TASK] Styling regression in MenuToggle component

[jenny-s51]

Certification

• I certify I am an Epic Owner for Kubeflow Notebooks 2.0 and expected to create planning-related issues.

Description

The MenuToggle component here has white text on a white backdrop.

Acceptance Criteria

• [] Fix this to align with the MUI menu styling: http://mui.com/material-ui/react-menu/#basic-menu
• [] "Actions" text should be visible

[jenny-s51]

/assign

[jenny-s51]

/area v2 /area frontend

[google-oss-prow]

@jenny-s51: The label(s) area//area cannot be applied, because the repository doesn't have them.

In response to this:

/area v2 /area frontend

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes/test-infra repository.

[jenny-s51]

Closed via #696