This reverts commit 18465337.

also make unknown rule -1 to better separate it
Before, an unknown rule actually went to 0 == OSQLParser::select_statement

The old code would incorrectly move anchors from one sheet to another
when updating the anchors of an object that was not on current sheet.

That can happen e.g. when modifying a cell value which triggers a
(cell-anchored) chart object on another sheet to get updated.

Interestingly, this issue ended up causing a write error during file
save in some situations, and in others silenting removing the affected
chart objects on save.

See spec v1.9.1, page 198.