"Table Footer Should Contain" should take into account <th> elements

[php-coder]

Table Footer Should Contain is always looking for <td> tags within <tfoot>:

SeleniumLibrary/src/SeleniumLibrary/keywords/tableelement.py

Lines 202 to 203 in 44a41f0

	def _find_by_footer(self, table_locator, content):
	return self._find(table_locator, '//tfoot//td', content)

but it's valid to have <th> tags there also. Example: https://developer.mozilla.org/en-US/docs/Web/HTML/Element/tfoot

Can we have this keyword fixed to take into account <th> tags as well?

[aaltat]

As with #1437 would it possible to get static HTML page and simple test case that demonstrates the problem?

[aaltat]

I do not have time investigate this in the near future. Therefore I am closing this issue. If you @php-coder want to return in the issue, please reopen the issue.