Refactor New Widget & Quick Post options menu to use disclosure pattern

[gcamacho079]

Description

• Refactor new widget dropdown to use disclosure menu (Resolves DEV-746, DEV-951)
• Refactor quick post options menu to use disclosure menu (Resolves DEV-275, DEV-276)

[linear[bot]]

DEV-746 New widget dropdown

DEV-275 Convert Quick Post 'options' menu to disclosure-type menu

Screen Shot 2022-04-25 at 1.52.04 PM.png

DEV-276 Update Quick Post 'options' menu to read 'More actions'

[linear[bot]]

DEV-951 New widget button on Dashboard doesn't have accessible name

Page Area:

Dashboard - #newwidgetmenubtn

Issue Description:

As of 4.1.0, no accessible name is present on the button to add a new widget

Action:

Refactor to disclosure widget and/or add aria-label/aria-labelledby

Screenshot/Code Snippet:

Screen Shot 2022-07-28 at 1.30.14 PM.png

Resolves CMS-251