Alert links system container -a11y

[brianteeman]

the changes made in #43102 are completely wrong and actually breaks basic bootstrap functionality. Instead of writing a fix for the joomla-alert component the changes impact every div that uses the bootstrap alert classes.

they should be reverted so we dont break regular usage of bootstrap alert divs that are used throughout joomla but now have links and buttons that are unreadable thus breaking usability and accessibility

it should look like this

but instead the code in #43102 has broken it so it looks like