Android/ProjectExplorer: Fix crash when removing multiple Android Qts

That were configured for a project.

The crash is triggered by a messy combination of the Android automatic
kit creation, project window update, and automatic creation of Qt
versions and kits by the automatic project importers, including a mess
of the listener pattern without any atomicity.

- the user removes the Qt versions
- the Android plugin updates the automatic kits and individually reports
  the removed kits (*)
- that triggers an update of the project window and an update of the
  target setup page (even if that is not shown, but that's yet another
  issue)
- that triggers the project importers, which add Qt versions, which in
  turn triggers another update of automatic kits in the Android plugin -
  while that is still in the reporting loop at (*)
- that leads to the crash, because the state at this point of time is a
  mess

This minimal fix of the specific crash makes the kit update reporting in
the Android plugin at (*) "more atomic", and the same for similar code
in the iOS plugin.

Fixes: QTCREATORBUG-30347
Change-Id: I2bea6fb735abcaa34469fc43f44aa37313f70429
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Alessandro Portale <alessandro.portale@qt.io>
Reviewed-by: <github-actions-qt-creator@cristianadam.eu>
Reviewed-by: Christian Kandeler <christian.kandeler@qt.io>

src/plugins/ios/iosconfigurations.cpp

@@ -305,8 +305,7 @@ void IosConfigurations::updateAutomaticKitList()
     existingKits.subtract(resultingKits);
     qCDebug(kitSetupLog) << "Removing unused kits:";
     printKits(existingKits);
-    for (Kit *kit : std::as_const(existingKits))
-        KitManager::deregisterKit(kit);
+    KitManager::deregisterKits(toList(existingKits));
 }
 
 static IosConfigurations *m_instance = nullptr;