tea: Sync parallel effects

[Vorkytaka]

Currently, if we start a long-running operation in Isolate, and another one after that, then we have a race conditions. Need to think about queue, sync.

[Vorkytaka]

Replay:

• Hash tools
• Open some file (~20mb it's fine for tests)
• Select sm3 digest
• While it counts select md4
• MD4 will set before sm3, so sm3 will override md4

[Vorkytaka]

For cases from example above we actually need to have cancelable operations. Like, "Events of the same type should replace each other"