org-element: Interpret pseudo objects without declaration
* lisp/org-element.el (org-element-object-containers): New variable
(org-element-interpret-data): Remove optional argument.
(org-element--interpret-data-1): Remove optional argument. Guess when
a given element or object has a pseudo type.
* lisp/ox-latex.el (org-latex-pseudo-objects): Remove variable.
(org-latex-table, org-latex--math-table): Apply signature change above.
* testing/lisp/test-org-element.el (test-org-element/interpret-data):
Update test.