InteractiveGroup: Use getBoundingClientRect() when computing pointer. (#24586)
InteractiveGroup: Use getBoundingClientRect() when computing pointer. (#24586)

* Fixed issue with pointer location when placed within child HTML element, affecting pointer offset.

* Update InteractiveGroup.js

Co-authored-by: OllyJ918 <e59f7553b52adb7ef42772b163ab922416c778d7@amrc.co.uk>
Co-authored-by: Michael Herzog <f6aeef0c0610dd1547ce61332ac92e282a679af1@human-interactive.org>
WestLangley/three.js,06wj/three.js,mrdoob/three.js,makc/three.js.fork,makc/three.js.fork,mrdoob/three.js,WestLangley/three.js,06wj/three.js