Docx mw feedback

[eanokian]

Pull Request

this PR contains updates coming from Medical Writing feedback

Checks

• (Have you updated the changelog.md ?)

[eanokian]

pending to know if the empty footnote row should be included in the docx exporter if the TLG does not have a footnote. If this applies, then:

1. update NEWS.md
2. add unit test that tests that
3. update snapshots

[eanokian]

we can merge into 'dev' the changes we have so far.
the blank row if the TLG doesn't have footnotes is something that we will skip for now as it may not be needed. I removed the code in this PR that implemented that behaviour.

[munoztd0]

still an issue in ubuntu ?

Joining with `by = join_by(USUBJID)`
mmrm() registered as emmeans extension
Saving _problems/test-docx_exporter_functions-651.R
[ FAIL 1 | WARN 0 | SKIP 0 | PASS 817 ]

══ Failed tests ════════════════════════════════════════════════════════════════
── Failure ('test-docx_exporter_functions.R:651:3'): export_TLG_as_docx() works with basic example ──
Expected `node_str` to equal "<w:tbl w:table_index=\"1\">".
Differences:
`actual`:   "<w:tbl>"                    
`expected`: "<w:tbl w:table_index=\"1\">"


[ FAIL 1 | WARN 0 | SKIP 0 | PASS 817 ]
Error:
! Test failures.