Handling of subscriptions with multiple topics with some extraFields

[abalarev]

Subscriptions for multiple topics, containing at least one extra field is incorrect.

• multiple topics without extraFields works ok - sends to the matching ones.
• having multiple topics with extraFields works for only one of them (when it's matching), but not deterministic for which one
• having a topic or topics with extraFields and some without extraFields works again only for one of the topics with extraFields (when it's matching and not for each topic), but for none of the topics without extraFields