[2.6] MOD-7944: Support multi-byte char terms (#5391)

[nafraf]

Description

Manual backport of #5391 to 2.6.
(cherry picked from commit 43701d8)

Changes:

• Since Version 2.6 limits the normalization buffer to 128 bytes, #define MAX_NORMALIZE_SIZE 128, expected results in testLongTerms() were modified to respect that limitation.

• For tests with indexes with LANGUAGE different from ENGLISH, the LANGUAGE was added to FT.SEARCH commands because this version does not take the language from index specification

• Since dialect 4 is not available in this version, test are only done for dialects 1 - 3.

• In test_cpp_llapi.cpp, RediSearch_CreateTagLexRangeNode() receives only 5 arguments, in this version const char* fieldName is not part of the function signature

• common.py:

  • Add config_cmd() and run_command_on_all_shards()
  • Replace ftDebugCmdName() by debug_cmd()

[codecov]

Codecov Report

Attention: Patch coverage is 96.44970% with 6 lines in your changes missing coverage. Please review.

Project coverage is 85.01%. Comparing base (f191462) to head (2aa21b7).
Report is 2 commits behind head on 2.6.

Files with missing lines	Patch %	Lines
src/query_parser/v1/lexer.c	86.95%	3 Missing ⚠️
src/query_parser/v2/parser.c	66.66%	2 Missing ⚠️
src/query_param.c	66.66%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##              2.6    #5648      +/-   ##
==========================================
+ Coverage   84.96%   85.01%   +0.04%     
==========================================
  Files         184      184              
  Lines       31343    31415      +72     
==========================================
+ Hits        26631    26706      +75     
+ Misses       4712     4709       -3     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.