[EPUB 3.3 RS] [question] Small difference between the XHTML Content Documents section and the SVG Content Documents section

The [SVG Content Documents section](https://www.w3.org/TR/epub-rs-33/#sec-svg) explicitly says:

> SHOULD support user selection and searching of text within SVG elements

While the[ XHTML Content Documents](https://www.w3.org/TR/epub-rs-33/#sec-xhtml) section makes no mention of searching for content.

Maybe it makes sense to align them?