Invasive CSS - Shadow DOM test

If the DOM is not isolated, a customer's CSS can apply to our components. This results in the Bubble looking wrong, for example:

To avoid this, the bubble's DOM can be isolated with a Shadow DOM root. Both the bubbles and the player can be affected.

In the examples below, CSS is applied to make the following changes:

When opening players, CSS is applied to make the following changes:

When shadowDom is enabled and correctly implemented, none of the above changes should be applied.