Switch tools and apps to non-strict C++ builds too

This complements commit 30e04340dac26ebd09f9bc8ceb598e873ab63ba7
("Switch to non-strict C++ builds so QT_SUPPORTS_INT128 is true") and
adds the same modification to tools and apps.

Otherwise qtconnectivity's sdspscanner won't compile, as it needs
quint128.

Task-number: QTBUG-119901
Change-Id: Ib9a6fe573e9420a471fdfffd76a2e43d3c5496d8
Reviewed-by: Ivan Solovev <ivan.solovev@qt.io>
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
(cherry picked from commit 7e37962cd0d1faf65249e08020619ef7175a280e)
Reviewed-by: Qt Cherry-pick Bot <cherrypick_bot@qt-project.org>

cmake/QtAppHelpers.cmake

@@ -94,7 +94,6 @@ function(qt_internal_add_app target)
         # qt_set_target_info_properties knows how to process them
     )
     qt_internal_add_target_aliases("${target}")
-    _qt_internal_apply_strict_cpp("${target}")
     qt_internal_adjust_main_config_runtime_output_dir("${target}" "${output_directory}")
 
     # To mimic the default behaviors of qt_app.prf, we by default enable GUI Windows applications,

cmake/QtToolHelpers.cmake

@@ -143,7 +143,6 @@ function(qt_internal_add_tool target_name)
         # qt_set_target_info_properties knows how to process them
     )
     qt_internal_add_target_aliases("${target_name}")
-    _qt_internal_apply_strict_cpp("${target_name}")
     qt_internal_adjust_main_config_runtime_output_dir("${target_name}" "${output_dir}")
 
     if (WIN32)