fix: Modal component is shown too high and gets out of viewport

[dgolovin]

What does this PR do?

Removes absolute position for Modal component because it is already has w-full and h-full

Screenshot / video of UI

That will change this behavior

to a normal one

What issues does this PR fix or reference?

How to test this PR?

• Tests are covering the bug fix or the new feature

[axel7083]

cc @deboer-tim

[lstocchi]

It introduces some issue in some cases.

Like when you click on the store name (troubleshooting -> stores -> click on a store name)

or if you try to push an image (images -> push image)

[deboer-tim]

Took a quick look. If anything I think we need to keep inset-0 on both the outer div and button (replacing top/left/w-*). I think we need to go back to compare against previous release to see how adopting Modal affected this - there's clearly a bigger issue here where we'll need to use z-ordering instead of overflow-hidden, but might be easier in the meantime to use a workaround like class:mt-[40px]="{top}"?