Enable strict mode 6.11 in qtcharts


Task-number: QTBUG-145281
Pick-to: 6.11
Change-Id: I7e95cd63d537648de1977ad7ee4ae92c0ff1c4af
Reviewed-by: Miikka Heikkinen <miikka.heikkinen@qt.io>
commit00393d5d9251fc85be401a89088edfb2a122b972
parentcb5dbc3732da3a381a00df5b33c5b832eca056c1
authorTomi Korpipaa <tomi.korpipaa@qt.io>
committerTomi Korpipaa <tomi.korpipaa@qt.io>
commit timeWed, 6 May 2026 03:43:09 +0000