[Development] QDoc false positives breaking builds, fix incoming

[Paul Wicking]

Hi all,

A recent QDoc change I made to auto-generating SMF documentation [0] is causing
false positive "No such parameter 'other'" warnings. This breaks with a
documentation `warninglimit` (so, everything in COIN). I've filed a P0 to track
this [1] and pushed a fix [2].

The reverts I created once made aware of the problem last night (thank you,
Christian Ehrlicher!) haven't been picked up yet due to the unusual ~18 hour
qttools integration time. I'm currently running a local qt5 build to confirm the
fix removes the false positives. If the reverts haven't integrated by the time my
build completes (~10 minutes), I'll self-approve and stage the fix as a
replacement.

Please accept my sincere apologies for the disruption.             

[0] https://codereview.qt-project.org/c/qt/qttools/+/706158
[1] https://qt-project.atlassian.net/browse/QTBUG-143636
[2] https://codereview.qt-project.org/c/qt/qttools/+/706879

Cheers,
//! Paul