Implement ic-popover component

### Summary
We have a popover menu component at the moment, but it only accepts menu items being slotted in and will only accept clicks on menu items otherwise the popover menu will close. We should create a simpler popover component that isn't necessarily a menu so can have anything slotted in.

### 💬 Description
Like a mixture of a dialog and the popover menu component.

It should have the same styling as popover menu but just allow any slotted content like dialog does.

We've had a couple of requests for being able to click different things within popover menu, but it would make more sense to not scope creep on that component and instead create a separate simpler component.

### 💰 User value
Having simpler components allows more flexibility.

### ✏ Designs
Won't necessarily needed updated designs as we may want it to look the same as popover menu, but we will need the popover component in Figma.

Start by reading the existing popover menu and dialog components to compare their styling, interaction, and slot behavior. Implement a separate popover that accepts arbitrary slotted content while retaining the popover menu styling, then verify that content inside it can be interacted with without closing it. Check the requested component against the planned Figma design when available.

Written by the indexing model from the issue text.