Utils: Fix build with MSVC with C++20

Rename process.h back to qtcprocess.h

MSVC's "threads" standard header includes <process.h>, and that ends up
including our process.h from Utils.

There already was a hacky workaround in place for a similar issue with
MINGW, but that doesn't work with MSVC because that doesn't have

Simply use a name that doesn't conflict.

Change-Id: I1159cd2096b4f2dbc4a1728d0131dd6edd30ebd3
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: <github-actions-qt-creator@cristianadam.eu>
Reviewed-by: hjk <hjk@qt.io>
(cherry picked from commit 5af531cd39)
Reviewed-by: Tim Jenssen <tim.jenssen@qt.io>
Reviewed-by: Eike Ziller <eike.ziller@qt.io>

src/plugins/android/androidcreatekeystorecertificate.cpp

@@ -7,7 +7,7 @@
 
 #include <utils/infolabel.h>
 #include <utils/layoutbuilder.h>
-#include <utils/process.h>
+#include <utils/qtcprocess.h>
 
 #include <QCheckBox>
 #include <QDialog>