[1.x] Fix: Keep select fields open

[angelej]

Many pulse cards use the <x-pulse::select /> component to sort or filter the results.
If the select component doesn't have an id attribute, it generates a random one on every rendering.
Because the id changes on every poll request (every 5 seconds), the DOM <select /> element gets replaced and automatically closes the input field.
Passing a static id to every <x-pulse::select /> component prevents DOM manipulations and keeps an active select field open.