Fix Image Lazy Loader for some older browsers

What does this MR do?

Use intersectionRatio to determine intersection

Some older browsers do not ship with isIntersecting, while they already have IntersectionObserver support. We make use of intersectionRatio now to fix the Lazy Loader for those browsers.

What are the relevant issue numbers?

• Closes #54407 (closed)

Does this MR meet the acceptance criteria?

• Changelog entry added, if necessary
• Documentation created/updated
• Tests added for this feature/bug
• Conforms to the code review guidelines
• Conforms to the merge request performance guidelines
• Conforms to the style guides
• Conforms to the database guides
• Link to e2e tests MR added if this MR has Requires e2e tests label. See the Test Planning Process.