Trigger that fires too often

[mversic]

it's possible to register a trigger that fires so often that it jams the network. This should be guarded against. When registering such triggers they should get rejected

[s8sato]

• Does a data trigger reacts to every data event in the event pool at the round? -- inspect
• Related to Trigger execution model #4937 and Record trigger execution as a transaction #4968:
  One of the concepts of pooling events was preventing loop of trigger executions. If we want an event to be converted to an intrinsic transaction and inserted to the other ordered transactions without being pooled, it might come down to this issue