Fix Qt-RangeLoopDetach warnings: trivial cases

To prevent detaching, wrap the containers into std::as_const().
If the container is an rvalue, it's impossible to use std::as_const().
In such cases introduce a local const variable.

Axivion-Id: qt_Add-ons_qtremoteobjects_dev_linux:SV248
Axivion-Id: qt_Add-ons_qtremoteobjects_dev_linux:SV249
Axivion-Id: qt_Add-ons_qtremoteobjects_dev_linux:SV250
Axivion-Id: qt_Add-ons_qtremoteobjects_dev_linux:SV255
Axivion-Id: qt_Add-ons_qtremoteobjects_dev_linux:SV256
Axivion-Id: qt_Add-ons_qtremoteobjects_dev_linux:SV257
Axivion-Id: qt_Add-ons_qtremoteobjects_dev_linux:SV291
Axivion-Id: qt_Add-ons_qtremoteobjects_dev_linux:SV328
Axivion-Id: qt_Add-ons_qtremoteobjects_dev_linux:SV329
Axivion-Id: qt_Add-ons_qtremoteobjects_dev_linux:SV330
Axivion-Id: qt_Add-ons_qtremoteobjects_dev_linux:SV331
Axivion-Id: qt_Add-ons_qtremoteobjects_dev_linux:SV332
Axivion-Id: qt_Add-ons_qtremoteobjects_dev_linux:SV334
Axivion-Id: qt_Add-ons_qtremoteobjects_dev_linux:SV335
Axivion-Id: qt_Add-ons_qtremoteobjects_dev_linux:SV336
Task-number: QTBUG-144772
Pick-to: 6.12 6.11 6.8
Change-Id: I87d1fd52aaa219c0c75671765d421531dca68ca3
Reviewed-by: Tatiana Borisova <tatiana.borisova@qt.io>