Create ngSanitize replacement utility function for use in the legacy maps service to process attribution

[kindsun]

Following up on #60942. There's currently no great substitute for ngSanitize for sanitizing attribution links in the legacy maps service. _.escape could potentially be useful, however out-of-the-box it functions differently than ngSanitize by escaping everything given to it, like the angle brackets used to construct the link html. What we likely need is a simple utility function that leverages _.escape to process the url content while not affecting the html structure of the URL itself.

cc @thomasneirynck

[elasticmachine]

Pinging @elastic/kibana-gis (Team:Geo)

[thomasneirynck]

Closed by #70888 .