Fix ES exception when a field missed in using updateAllCounters.

[jafaripur]

Q	A
Is bugfix?	✔️
New feature?	❌
Breaks BC?	❌

When using updateAllCounters for a field which is missed or is null get exception error from ElasticSearch:

Cannot invoke "Object.getClass()" because "left" is null

This behavior should cast null and missed field to 0.

[what-the-diff]

PR Summary

• Deprecated method removal
  The method setPrimaryKey() has been marked as deprecated and is now removed.
• Null check added in updateAllCounters()
  To prevent NullPointerExceptions, a null check has been added when updating counters in the Elasticsearch indexing engine.

[beowulfenator]

@jafaripur Thank you for your improvement. This is clearly a good change. However, let's explore all possibilities and perhaps make this function even better. As far as I know, the different values for an attribute are possible. Here is my suggestion on handling them all:

Value	Action
A null value	Cast to integer and make it 0, then update
A "number" value	Update normally
A non-number value	Raise exception
An array with a single value	Look at the single value and act accordingly. Preserve the array, so with a +1 increment, [123] becomes [124], not 124
An array with multiple values	Raise exception

If possible, the exception should be meaningful, so it should be obvious that we are updating a value that can not be updated.