fix: add border to toast and tooltip in WHCM

[jnurthen]

Description

Added transparent borders to toast and tooltip in WHCM (e.g., #1073)

How and where has this been tested?

• How this was tested: Using steps in issue #1073
• Browser(s) and OS(s) this was tested with: Edge 86.0 on Win 10 -->

Screenshots

To-do list

• [ ] If my change impacts other components, I have tested to make sure they don't break.
• [ ] If my change impacts documentation, I have updated the documentation accordingly.
• [x] I have read the CONTRIBUTING document.

• [x] This pull request is ready to merge.