[ic-toggle-button] - add fixed positioning prop for tooltip

### 💬 Description
https://github.com/mi6/ic-ui-kit/pull/3872 added support for setting fixed positioning of tooltips and tooltips on buttons. This can be useful in scenarios where tooltips are chopped off by a parent container. An `ic-toggle-button` uses an `ic-button` under the covers so it would be good to allow this to be set for toggle buttons.

This would involve adding a `tooltipFixedPositioning` prop to `ic-toggle-button` and `ic-toggle-button-group`

### 💰 Use value
Makes the components consistent

### 🧾 Guidance
An example should be added to the guidance site

### 🚨 Urgency (low, medium or high)
medium - a team requested it, but does have a workaround

Start with the ic-toggle-button and ic-toggle-button-group implementations, then trace the existing fixed tooltip positioning support in ic-button. Add the tooltipFixedPositioning prop to both components and document an example on the guidance site; the work is complete when toggle-button tooltips can use fixed positioning consistently.

Written by the indexing model from the issue text.