Modernize ui-helper-hidden-accessible

[melloware]

Based on this https://stackoverflow.com/a/62109988/502366

This jQuery style for screenreaders has not changed in a long time but now that browser have advanced it is missing some features explained in the stack overflow.

.ui-helper-hidden-accessible {
        position: absolute;
	pointer-events: none;
        opacity: 0;
	white-space: nowrap;  /* added line to stop words getting smushed together (as they go onto seperate lines and some screen readers do not understand line feeds as a space */
}

[linux-foundation-easycla]

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[melloware]

Just putting this here for others...