[JSDSERVER-11242] Using many Insight post functions stops some of them to execute

Using many Insight post functions stops some of them to execute.

It is suspected this is due to race condition that can occur when there are many functions executed (e.g. 4 or more).

They should all work and be executed during the transition.

Some post functions will work but the others will not.

In some cases, the following may help:

Re-arrange the order of the post functions.
For the post function that does not execute, add the following Groovy validator, that will delay the execution of the post function by 1 second:
```
sleep(1000)
return true
```

was cloned as

JSDCLOUD-11136 Using many of Insight post functions stops some of them to execute

mentioned in: Page Failed to load; Page Failed to load; Page Failed to load; Page Failed to load

No work has yet been logged on this issue.

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