Relax validation regex to allow icon names like "bank-JP" and "park-alt1"
Relax validation regex to allow icon names like "bank-JP" and "park-alt1"

The pattern was hardcoded to be quite restrictive, but simplestyle
allows any "icon ID".  Maki 7 has introduced icons with a wider
variety of names, so we relax the pattern to make them valid.

Bug: T315226
Change-Id: I20957878fa602ad49dbb74e3c77dfd6c7f05f09a

wikimedia/mediawiki-extensions-Kartographer,wikimedia/mediawiki-extensions-Kartographer,wikimedia/mediawiki-extensions-Kartographer