Fixes #95082

Fixes #95114

This is more accurate than web due to file:/// links

Fixes #95638

Diff: https://github.com/xtermjs/xterm.js/compare/aecfb57...e7f72a1

Fixes #95631

Having it outside xterm was causing a lot of issues when using
overlay targets for link hovers as mouse events bubble to ancestors.

Use `search.seedWithNearestWord` setting instead of emptyness of search input to control nearest word seeding.
Ref #91901.