Fix table navigation commands in Google Docs (#9562)
* Allow table navigation in Google Docs.
Specifically:
* Expose the real IAccessible2 table coordinates for navigation via rowNumber, columnNumber, rowCount and columnCount NvDAObject properties, and controlField attributes, rather than IA2-specific table properties.
Add new optional properties to NVDAObjects: presentationalRowNumber, presentationalColumnNumber, presentationalRowCount and presentationColumnCount.
* Provide implementations of the presentational* properties for tables on NVDAObjects for IAccessible2 that uses rowindex and colindex IA2 aria attributes, allowing web authors to override how table coordinates are presented without confusing actual table navigation logic.
* Similarly for controlFields, expose table-* and table-*-presentational attributes allowing for overriding of table coordinate presentation when the web author has specified it.
* IA2TextInfo's updateSelection method: If the requested start and end offsets are the same (I.e. the caller wants a collapsed selection) call setCaretOffset instead. This gets around strange bugs in Google Ghrome / Google Docs where making collapsed selections in table cells selects the entire cell.
* Address review comments.
* Address review comments.
* Update what's new.
