*/*: Bump PORTREVISION for known Qt private API abusers

Qt 6.9.2 edition.

These ports are known to directly use or link to a library that uses the
Qt private API and must be rebuilt with every Qt update.

Qt *public* API/ABI compatability is excellent, so most consumers don't
need to necessarily be rebuilt between patch or even minor releases, but
use of the private API breaks this compatibility between even patch
releases and its use is highly discouraged.

This list [1] is based on histortical data. We don't have time to
revisit every port on the list with each Qt update, so if your port has
dropped Qt private headers and was bumped in error, please remove it
yourself if you have write access to the Wiki or alert someone on kde@.

[1] https://wiki.freebsd.org/KDE/Qt

MFH:		2025Q3

(cherry picked from commit ca55e461e4817d34f513f551ef8d788bc46dec0e)

KDE: Update Plasma to 6.4.4

Announcements: https://kde.org/announcements/plasma/6/6.4.4/
(cherry picked from commit 3b1edd3835be523a4e2e1c0551f56c760ccc07ef)

KDE: Update Plasma to 6.4.3

Announcements: https://kde.org/announcements/plasma/6/6.4.3/

Ports changes:

- Explicitly disable KF6NetworkManagerQt, it is a stub currently.

audio/plasma6-plasma-pa:
 - Renew USE_KDE components

(cherry picked from commit f235dbcc7b076eee73338aaa00e11ccfbf20a60b)

KDE: Update Plasma to 6.4.2

Announcements: https://kde.org/announcements/plasma/6/6.4.2/
(cherry picked from commit 37e5cfdcc622ecdd34d3bcd4685c72554346bed9)