Fix loading state blink behaviour on user list table

[nkshah2]

Because the API responds really quickly the loading state blinks in and out in less than a second which looks really strange.

We should change the behaviour to show the loading state only if the API doesnt respond in some time (500ms for example)

[sulha199]

@nkshah2 we cannot estimate how long the duration of the request. Let say we get a 550ms, then we delay showing the loading until 500ms. It will also blink for 50ms which is not good as well.

If the problem is related with the columns that shift during the loading, then we should define the width for each individual column to minimize shifting.

[nkshah2]

We dont need to estimate the duration of the request, we can just decide to show nothing on screen for the initial load and only show the loader after 100ms if the network request has not finished for example

That way the loader wont blink in and out instantly, we can discuss this