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/remotelinux/rsyncdeploystep.cpp

@@ -109,7 +109,7 @@ void RsyncDeployService::doDeploy()
 void RsyncDeployService::createRemoteDirectories()
 {
     QStringList remoteDirs;
-    for (const FileToTransfer &file : qAsConst(m_files))
+    for (const FileToTransfer &file : std::as_const(m_files))
         remoteDirs << file.m_target.parentDir().path();
     remoteDirs.sort();
     remoteDirs.removeDuplicates();