[Chore] Max-height of Toast Component

[stolve]

Currently by default the toast component has a max-height that causes an overflow-y to occur which is not consistent with the established UX. By default the toast should behave the way that it does when this is set to false. We want the option additionally to set the toast to have a configurable maximum height and scrollability.

This is currently an issue in the end-user dashboard project(https://asentinel.atlassian.net/browse/PPS-103) on mobile, and the issue can be seen in the image below:

[adhiyan-tangoe]

By Default scroll bar should not be there for the toast notification.