TIKA-4784 -- improve utf16 handling in id3 - #2943

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• there is an open issue on the Tika issue tracker which describes the problem or the improvement. We cannot accept pull requests without an issue because the change wouldn't be listed in the release notes.
• the issue ID (TIKA-XXXX)
  • is referenced in the title of the pull request
  • and placed in front of your commit messages surrounded by square brackets ([TIKA-XXXX] Issue or pull request title)
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• if you add new module that downstream users will depend upon add it to relevant group in tika-bom/pom.xml.

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