Doc: QAxSelect: Mark private slots as \internal


These slots exist to wire up internal signal/slot connections within
QAxSelect's UI, and can be considered an implementation detail hidden
behind the QAxSelectPrivate pimpl.

Pick-to: 6.12
Change-Id: Ic70845f7deada564d0e2a886f149a579439f3d8b
Reviewed-by: Jerome Pasion <jerome.pasion@qt.io>
commit61791a3c8d323a5db06a1b54d563c89d2520f848
parent2e674e06c93e6e5a20713c09bfd96c475ff65a6c
authorTopi Reinio <topi.reinio@qt.io>
committerTopi Reinio <topi.reinio@qt.io>
commit timeThu, 3 Sep 2026 07:49:12 +0000