[Backport 2026.01.xx] NL translations update v2026.01.00

[offtherailz]

Description

Backport of #12300 to 2026.01.xx.

Fixes #

[tdipisa]

@ygodaert can I kindly ask you to fix conflicts in this backport? Many thanks.

[ygodaert]

@tdipisa my bad... There was still a reference to "<<<<<<< HEAD=======" after resolving the merge conflicts. I opened a new pull request to fix this issue >> #12438. I didn't saw a way to add the commit to the pull #12215.

[tdipisa]

@ygodaert there are still ESLint issues due merge conflicts

[ygodaert]

@tdipisa Apparently the visual merge conflict resolver introduced a couple of artefacts of conflict tags after resolving the conflicts. In #12442 I removed them, double checked through a JSON lint and everything should be resolved now.

[tdipisa]

@ygodaert I'm sorry but there are still issues. Running an 'npm run lint' on this PR branch locally you should be able to see what is failing:

[ygodaert]

@tdipisa I fixed this in https://github.com/geosolutions-it/MapStore2/pull/12442/changes. Is there any other action I need to do or should have done?
In the future I will only use my IDE to make changes on merge conflicts, because it feels a bit buggy in GitHub UI.

[tdipisa]

@ygodaert I've fixed this for you. Can you please check if ok before I merge? Thanks.

[ygodaert]

@tdipisa looks good to me, thank you!