refactor(ui): Make the delete confirmation dialog less verbose

[sschuberth]

No description provided.

[Etsija]

The DeleteDialog component has had a DOM nesting bug from the start, which I'm bringing up here, as you are anyway modifying the component: AlertDialogDescription is specified as a HTML paragraph element, which according to the HTML standards cannot contain any block elements inside it. Therefore, any time a DeleteDialog is opened in the UI, browser throws an error, which you can see in the Web Developer Tool's console:

In HTML, <div> cannot be a descendant of <p>.
This will cause a hydration error.

To fix the errors, one would need to find a way to represent the contents inside AlertDialogDescription without using any block elements like <div> or <p> (<span> is an inline element, which is allowed in this case). The best way I think is to not have one description, but several (as it's quite allowed). This refactoring gets rid of the DOM nesting errors, as you can see, now the description components do not contain any HTML block elements:

        <AlertDialogHeader>
          <div className='flex items-center'>
            <OctagonAlert className='h-8 w-8 pr-2 text-red-500' />
            <AlertDialogTitle>Confirm deletion</AlertDialogTitle>
          </div>
        </AlertDialogHeader>
        <div className='flex flex-col gap-2'>
          <AlertDialogDescription>
            Note that deletion is irreversible and might have unwanted side
            effects.
          </AlertDialogDescription>
          <AlertDialogDescription>
            If you are sure to delete the {thingName}{' '}
            <span className='font-bold'>{thingId}</span>, enter the bold text
            below for confirmation.
          </AlertDialogDescription>
          <AlertDialogDescription>
            <Input
              autoFocus
              value={input}
              onChange={(e) => setInput(e.target.value)}
            />
          </AlertDialogDescription>
        </div>

Maybe put that rearrangement of the DOM into a separate fix commit?