Demos: persistent toolbar active state fix

[cgack]

Fixes gh-7578

[arschmitz]

This looks good to me works and all tests still pass the only thing is the component should be toolbar: not demos but we will just fix that when we rebase this to land it anyway 👍

[cgack]

I'm a little confused why this isn't Demos but i'm okay with calling it toolbar too. Should I rebase this or is that something you plan to do when its time to land it?

[arschmitz]

@cgack We will do it when its ready to land so we don't destroy the pr history. The reason thats its toolbars not demos is because its a demo of toolbar. When possible always use the actual component name your working on as the component name in the commit message. The demos component name is only used if its something thats is not specific to another component. For example if you were to change the header in all the demos.