Replace deprecated qAsConst with std::as_const

qAsConst was deprecated in Qt 6.6; std::as_const (C++17, already the
project standard) is the drop-in replacement. Clears 46 -Wdeprecated-
declarations warnings across 18 files. No behavioural change.

sources/TerminalStrip/GraphicsItem/terminalstripdrawer.cpp

@@ -265,7 +265,7 @@ void TerminalStripDrawer::paint(QPainter *painter)
         painter->restore();
 
 			//Draw the bridges
-		for (const auto &points_ : qAsConst(bridges_anchor_points))
+		for (const auto &points_ : std::as_const(bridges_anchor_points))
 		{
 			painter->save();
 			auto pen_{painter->pen()};