Add parent hover hint pattern to inline edit component

[interactivellama]

@kwilloughby Would like to be able to add "Icon With Hint Hover" class to the inline edit wrapper and to the button.

https://latest-204.lightningdesignsystem.com/components/button-icons#flavor-icon-with-hint-hover

[kwilloughby]

This aligns with: https://latest-204.lightningdesignsystem.com/components/panels#flavor-detail-panel-form-edit-mode

[interactivellama]

Closing. Inline Edit is deprecated in #1350. The UX pattern is to use a Popover paired with a edit icon OR swap a read only input with a base input component if used within a large form.