chore(docs): update menutoggle examples icon prop

[evwilkin]

Closes: #10841

This PR updates the <MenuToggle> components across all examples/demos to use the icon prop to pass icons where they are currently being passed as children.

This also updates one usage within the Table component: https://github.com/patternfly/patternfly-react/pull/11005/files#diff-5970fe3afb01cc875a418ab5399d91df662a78a5edc8f2c7c2e217f0315101ebR110-R114

[patternfly-build]

Preview: https://patternfly-react-pr-11005.surge.sh

A11y report: https://patternfly-react-pr-11005-a11y.surge.sh

[tlabaj]

General comment. We do not need to wrap the icons in the <Icon> componet. The Icon componet should only be used when needed (e.g. sizing).

[mcoker]

Just want to +1 removing <Icon> unless it's needed. Also if it's used, you'll need to pass isInline so that it inherits font size/color. You can see the icons here are not the correct color, but either removing <Icon> or using <Icon isInline> should fix it - https://patternfly-react-pr-11005.surge.sh/components/menus/menu-toggle#with-icons

[mattnolting]

This looks good to me. As an aside, I see aria-hidden="true" repeated in each instance. I suggest adding that as a default and optionally allowing an aria-attribute prop to override aria-hidden.