chore(SEO): Sanitze zone names in URL

[VIKTORVAV99]

Issue

In some online platforms when you write a link like this https://app.electricitymaps.com/DK-DK1: Denmark, the colon is included which breaks the links. Similar problems can occur with (https://app.electricitymaps.com/DK-DK2) causing the trailing parentheses to be included in the link.

Description

In order to avoid this I added a regex that only allows the zoneID to contain, letters, numbers and - which we use as a subzone delimiter. This should resolve the issue quite nicely.

I also took to opportunity to clean up the code a bit so it handles more things internally and not potentially causing multiple navigations requests. So instead of going aus -> AUS -> AU it simply goes aus -> AU.

Double check

• I have run pnpx prettier@2 --write . and poetry run format in the top level directory to format my changes.

[tonypls]

LGTM