Make association reference set names less verbose for UI display purposes (9.x)

[apeteri]

This is the counterpart of PR #1340.

[codecov]

Codecov Report

Attention: Patch coverage is 71.42857% with 4 lines in your changes missing coverage. Please review.

Project coverage is 63.63%. Comparing base (dd21d60) to head (df4c984).
Report is 13 commits behind head on 9.x.

Files with missing lines	Patch %	Lines
...nal/snowowl/snomed/datastore/SnomedRefSetUtil.java	71.42%	2 Missing and 2 partials ⚠️

Additional details and impacted files

@@            Coverage Diff            @@
##                9.x    #1341   +/-   ##
=========================================
  Coverage     63.62%   63.63%           
- Complexity    12494    12503    +9     
=========================================
  Files          1611     1611           
  Lines         57027    57041   +14     
  Branches       5602     5603    +1     
=========================================
+ Hits          36286    36296   +10     
- Misses        18402    18406    +4     
  Partials       2339     2339           

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[cmark]

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