useSref: "target="_blank" ignored when link contains child elements

[mishra-ankit-learn]

• Issue Example:
  • https://codesandbox.io/p/sandbox/uirouter-react-ussref-blank-target-not-working-with-div-inside-a-992y2s
• Issue:
  • useSref handles click when anchor element contains a child element. This is an issue when the user wants the browser to handle the onClick event, by providing a target attribute.
• Use Case:
  • The user wants the link to open in a new tab
• Cause:
  • In Fix fix(sref): do not handle clicks if the dom element has a 'target' attribute Also do not handle clicks if shift or alt is being held down. #799 the targetAttr (line#87) is captured from e.target assuming that the mouse event got triggered from the anchor. But when there is a child element present inside the anchor element, the mouse event triggers the child element. The child element does not have a target attribute, which makes useSref handle the onClick.
• Fix:
  • Although the target attribute is not present in e.target, it is in e.currentTarget. So we should check for e.currentTarget when getting targetAttr

[mishra-ankit-learn]

Created PR: #1226 to fix the issue.

Added unit test too