fix: keep hyperlink URL when it has a fragment

[nkuprins]

Closed: #1138

Purpose of the pull request

As title.

What's changed?

• HyperlinkTagHandler resolves the r:id relationship first and appends "#" + location when both are present.
• The two cases in the handler swap order (the r:id lookup is now case 1), and the Optional chain becomes a plain if, so the diff is larger than the change in behaviour.
• New test ExtraDataTest#readHyperlinkWithUrlFragment reads extra/extraHyperlinkFragment.xlsx

Checklist

• I have read the Contributor Guide.
• I have written the necessary doc or comment.
• I have added the necessary unit tests and all cases have passed.

[skytin1004]

Thanks for the fix. I reproduced the issue on main and confirmed that this change preserves the full hyperlink, including the fragment. I also verified that internal links and external links without fragments still work as expected. The relevant tests passed locally on Java 11. LGTM.