member_invite_declined_email: wrong number of arguments (given 5, expected 4)

https://sentry.gitlap.com/gitlab/gitlabcom/issues/10265/

ArgumentError: wrong number of arguments (given 5, expected 4)
  app/mailers/emails/members.rb:60:in `member_invite_declined_email'
    def member_invite_declined_email(member_source_type, source_id, invite_email, created_by_id)
  lib/gitlab/metrics/instrumentation.rb:155:in `block in member_invite_declined_email'
    trans.method_call_for(#{label.to_sym.inspect}).measure { super }
  lib/gitlab/metrics/method_call.rb:23:in `measure'
    retval = yield
  lib/gitlab/metrics/instrumentation.rb:155:in `member_invite_declined_email'
    trans.method_call_for(#{label.to_sym.inspect}).measure { super }
  lib/gitlab/sidekiq_middleware/request_store_middleware.rb:6:in `call'
    yield
...
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