Fix the wrong escaping on settings datatable

[rdwebdesign]

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What does this PR aim to accomplish?:

Fix #1513

How does this PR accomplish the above?:

The datatable formarter render: $.fn.dataTable.render.text() escapes every HTML tag inside the cell, transforming <i>unknown</i> into <i>unknown</i>.

What documentation changes (if any) are needed to support this PR?:

none

[yubiuser]

This should be extended to currently active leases

https://github.com/pi-hole/AdminLTE/blob/bf82c47e980c5cec5b6d4f8d23d5dcbd1f702077/scripts/pi-hole/js/settings.js#L241

I did not follow the code completely but this looks suspicious as well

https://github.com/pi-hole/AdminLTE/blob/bf82c47e980c5cec5b6d4f8d23d5dcbd1f702077/settings.php#L601

[rdwebdesign]

I did not follow the code completely but this looks suspicious as well

No.

The line 601 includes a <i> tag for a different element (to format the tooltip text).
This element will not be touched by javascript function, so it will not cause problems.

[pralor-bot]

This pull request has been mentioned on Pi-hole Userspace. There might be relevant details there:

https://discourse.pi-hole.net/t/pi-hole-ftl-v5-14-web-v5-11-and-core-v5-9-released/53529/1