mediawiki.api: Use action=query&meta=tokens instead of action=tokens

mediawiki.api: Use action=query&meta=tokens instead of action=tokens

Follows-up aacdb664a1, which was reverted.

API action=query&meta=tokens has different token types than the old
action=tokens values. Use a map to maintain support in the JavaScript API for
old token types that now fold into the generic 'csrf'.

Aside from core token types, those added by extensions are no longer
actively used from the old token API.

Bug: T72059
Change-Id: Iec3a9f0f51d64d90c81a147cc18097dcf679c7c9