feat: disable prefetch and shard cache when memtrie is enabled

[pugachAG]

Part of #11912.

See zulip thread for more context around removing prefetcher.

Shard cache is removed since it doesn't provide any additional caching on top of memtrie since TRIE_LIMIT_CACHED_VALUE_SIZE value is lower than INLINE_DISK_VALUE_THRESHOLD. This was confirmed by near_shard_cache_hits metric.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 71.51%. Comparing base (6412f22) to head (8c32e00).
Report is 19 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master   #11965      +/-   ##
==========================================
- Coverage   71.58%   71.51%   -0.08%     
==========================================
  Files         808      812       +4     
  Lines      163537   164467     +930     
  Branches   163537   164467     +930     
==========================================
+ Hits       117071   117619     +548     
- Misses      41386    41687     +301     
- Partials     5080     5161      +81     

Flag	Coverage Δ
backward-compatibility	0.23% <0.00%> (-0.01%)	⬇️
db-migration	0.23% <0.00%> (-0.01%)	⬇️
genesis-check	1.34% <0.00%> (+<0.01%)	⬆️
integration-tests	38.44% <97.61%> (-0.02%)	⬇️
linux	71.27% <100.00%> (-0.09%)	⬇️
linux-nightly	71.11% <100.00%> (-0.04%)	⬇️
macos	54.25% <100.00%> (-0.13%)	⬇️
pytests	1.60% <0.00%> (+<0.01%)	⬆️
sanity-checks	1.41% <0.00%> (+<0.01%)	⬆️
unittests	65.46% <100.00%> (-0.21%)	⬇️
upgradability	0.27% <0.00%> (-0.01%)	⬇️

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