Allow removing title attributes from author archive links and author website links

[sabernhardt]

Option 3:
Creates a new $use_title_attr argument for each of the author link functions.

By default, this should not change the output of these functions.

Trac 62835

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[sabernhardt]

The function the_author_posts_link() deprecated an $idmode parameter. If that parameter needs to remain deprecated and unused, I could undo the changes to that function in this PR. Then anyone who wants to remove the title attribute would use
echo get_the_author_posts_link( false );

[github-actions]

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