DOM renderer does not respect minimum contrast ratio correctly on selected inverse text

Below using MCR=4.5

DOM (wrong)

![Image](https://github.com/xtermjs/xterm.js/assets/2193314/8e3987ae-3518-4c7e-9cf2-6cd10d49587d)

Webgl (correct)

![Image](https://github.com/xtermjs/xterm.js/assets/2193314/a7c7b11b-ff12-4233-844d-407b354a608c)

