[wip] Close cursor if it's opened by different tx

[awskii]

So we keep cursor interface opened inside DomainRoTx. If we then create new tx and try to read with it from DomainRoTx, value will be fetched via previously opened cursor which is not expected behaviour.

I set stupid fix for that but i assume there could be better solutions.

[AskAlexSharov]

@awskii maybe we must panic in this case? just to enforce next invariant:

• temporal.Tx guarantee that lifetime of dbtx is longer than lifteme of aggtx
• not allowed to move between goroutines: tx, aggtx, doms

[awskii]

@AskAlexSharov from one side yes, it would be better to panic with info, but i had a small intention to reuse sharedDomains without closing and reopening (requires only to set up new aggtx) but this could end up badly.

[AskAlexSharov]

sharedDomains without closing and reopening (requires only to set up new aggtx) where do you need it?

[awskii]

i found it useful while did commitment rebuilding. I am going to add panic as you said.