Deprecated: `findDOMNode` Used in `OverlayTrigger` After React 18 Upgrade

Upon upgrading openedx/frontend-app-learner-portal-enterprise to React 18, new deprecation warnings related to findDOMNode are seen when running in StrictMode. See below for stack trace:

Warning: findDOMNode is deprecated in StrictMode. findDOMNode was passed an instance of RefHolder which is inside StrictMode. Instead, add a ref directly to the element you want to reference. Learn more about using refs safely here: https://reactjs.org/link/strict-mode-find-node Error Component Stack
    at button (<anonymous>)
    at _c (index.tsx:46:3)
    at RefHolder (OverlayTrigger.js:17:1)
    at OverlayTrigger (OverlayTrigger.js:57:1)
    at OverlayTrigger (index.tsx:41:14)
    at IconButtonWithTooltip (index.tsx:161:3)
    at div (<anonymous>)
    at _c (index.jsx:11:3)
    at div (<anonymous>)
    at div (<anonymous>)
    at div (<anonymous>)
    at _c (index.jsx:11:3)
    at div (<anonymous>)
    at div (<anonymous>)
    at BaseCourseCard (BaseCourseCard.jsx:125:3)

It appears the findDOMNode is coming from react-bootstrap's OverlayTrigger component here.

Start by reviewing react-bootstrap's OverlayTrigger implementation at the linked source and tracing its use through the stack trace, including IconButtonWithTooltip and BaseCourseCard. Reproduce the warning under React 18 StrictMode, then verify that the selected change removes the findDOMNode deprecation without breaking the affected overlay behavior.