Flows: improve reaction to configuration & trigger properties changes for pending flows

[zaychenko-sergei]

Whenever we have a pending flow already, such as waiting for scheduled time, or other type of condition, the configuration and trigger changes are not affecting it, and are only applied to the next flow.

Consider applying changes immediately, unless the tasks have already started.

Consider the following scenarios:

• Configuration updates:
  • Ingest: fetch uncacheable option
  • Breaking changes reaction
  • Retry policy
  • Stop policy
• Trigger updates:
  • Ingest: schedule rules (earlier, later)
  • Transform: batching condition rules