NodeLintRegistry lacks addWildcardPattern.

[lrhn]

The NodeLintRegitstry has an entry for each AST node/visitor of AstVisitor, except that it lacks one for the AST node WildcardPattern.

Presumably it was never added when wildcards were introduced.

There is a _forWildcardPattern list and a vistWildcardPattern visitor running through that list, just no function to add subscriptions to the list.

[lrhn]

(Here's an implementation, but I guess there needs to be some versioning shennanigans too: https://dart-review.googlesource.com/c/sdk/+/424042)

[bwilkerson]

@scheglov @stereotype441 There should probably be a test to verify that all the pieces are added here so that this can't get out of sync without a warning.

[srawlins]

Thanks for the fix!