SO-5904: ECL search disable synonym token filter

[cmark]

This PR fixes a minor lexical search issue in ECL filtering related to using a search analyzer that includes synonyms of the search string. While this is okay for user interfaces, during ECL evaluation this should be disabled by default when using the match lexical search type.

https://snowowl.atlassian.net/browse/SO-5904

[codecov]

Codecov Report

Patch coverage: 88.00% and project coverage change: +0.01% 🎉

Comparison is base (35cfefb) 64.08% compared to head (b97fe30) 64.09%.

Additional details and impacted files

@@             Coverage Diff              @@
##                9.x    #1205      +/-   ##
============================================
+ Coverage     64.08%   64.09%   +0.01%     
- Complexity    13135    13137       +2     
============================================
  Files          1799     1799              
  Lines         61519    61535      +16     
  Branches       5689     5690       +1     
============================================
+ Hits          39424    39441      +17     
+ Misses        19659    19656       -3     
- Partials       2436     2438       +2     

Files Changed	Coverage Δ
...tional/snowowl/core/request/search/TermFilter.java	88.88% <ø> (ø)
...com/b2international/index/query/TextPredicate.java	85.29% <50.00%> (+4.04%)	⬆️
...l/snowowl/core/request/search/MatchTermFilter.java	76.31% <94.11%> (+5.54%)	⬆️
...snowowl/core/request/ecl/EclEvaluationRequest.java	79.82% <100.00%> (+0.26%)	⬆️

... and 2 files with indirect coverage changes

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[apeteri]

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