fix: fix loader not centered horizontally

[benoitf]

What does this PR do?

Copy of #3269 for 1.2.x version

Screenshot/screencast of this PR

What issues does this PR fix or reference?

How to test this PR?

see instructions from #3269

Signed-off-by: Florent Benoit fbenoit@redhat.com

[benoitf]

@deboer-tim you wanted to change the content to get rid of patternfly

you want to do it as part of this PR or a follow-up PR ?

[deboer-tim]

I would just do the following. Do you want to commit or should I do a separate PR? Not sure how to 'take over'.

  <main class="flex flex-row w-screen h-screen justify-center">
    <div class="flex flex-col justify-center">
      <SealRocket />
      <h1 class="text-center text-xl">Initializing...</h1>
    </div>
  </main>

[benoitf]

@deboer-tim you can just add new commits on top of my branch, PR will be updated 👍