Reduce compiler warnings: replace qAsConst with std::as_const and update event localPos() to position()

Replaced deprecated qAsConst usages in built modules and updated QMouseEvent::localPos() to position() per Qt6 deprecation guidance.\n\nCo-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

build/DartConfiguration.tcl

@@ -11,7 +11,7 @@ BuildDirectory: /repo/build
 CostDataFile: 
 
 # Site is something like machine.domain, i.e. pragmatic.crd
-Site: 9fda9b542b94
+Site: ffa417ec725b
 
 # Build name is osname-revision-compiler, i.e. Linux-2.4.2-2smp-c++
 BuildName: Linux-c++