Customize list of blocks that use "\footnotemark" in `org-latex-footnote-reference'

[8dcc <8dcc.git@gmail.com>]

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Hello,

I am exporting an Org file that contains a large verse block to
LaTeX. This verse block contains footnotes, but they appear in the page
where the LaTeX verse environment ends. I looked at the exported .tex
file and I noticed that it was using "\footnotemark" and
"\footnotetext[N]{...}", instead of "\footnote{...}".

If it's not clear what the issue is, simply add a footnote to the first
lines of a very long verse block (longer than one page), and export it
to PDF.

I searched in ox-latex.el and I found the "problem". Inside
`org-latex-footnote-reference', the 2nd `cond' clause checks if the
reference is within a verse block, among others. It checks this by
calling `org-element-lineage' with a quoted list that contains the
hardcoded "blacklisted" blocks.

I think it would be a good idea to allow the user to customize this
list, since I personally don't think this makes sense with a verse block
(and probably table cell), for example.

Thanks in advance.

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