Port from qAsConst() to std::as_const()

We've been requiring C++17 since Qt 6.0, and our qAsConst use finally
starts to bother us (QTBUG-99313), so time to port away from it
now.

Since qAsConst has exactly the same semantics as std::as_const (down
to rvalue treatment, constexpr'ness and noexcept'ness), there's really
nothing more to it than a global search-and-replace.

Task-number: QTBUG-99313
Change-Id: I88edd91395849574436299b8badda21bb93bea39
Reviewed-by: hjk <hjk@qt.io>

src/plugins/android/androidsdkpackage.cpp

@@ -133,7 +133,7 @@ SdkPlatform::SdkPlatform(const QVersionNumber &version, const QString &sdkStyleP
 
 SdkPlatform::~SdkPlatform()
 {
-    for (SystemImage *image : qAsConst(m_systemImages))
+    for (SystemImage *image : std::as_const(m_systemImages))
         delete image;
     m_systemImages.clear();
 }