Problem: memiavl minQueryState logic is unnesserary

[yihuang]

Solution:

• simplify the logic, make snapshot-keep-recent defaults to 1, which is enough for ibc relayers to work.

fixed chain-main integration test: crypto-org-chain/chain-main#989

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[codecov]

Codecov Report

Merging #1064 (c883d9c) into main (f774da9) will decrease coverage by 0.17%.
The diff coverage is 71.42%.

@@            Coverage Diff             @@
##             main    #1064      +/-   ##
==========================================
- Coverage   46.72%   46.56%   -0.17%     
==========================================
  Files          82       82              
  Lines        7124     7095      -29     
==========================================
- Hits         3329     3304      -25     
+ Misses       3442     3440       -2     
+ Partials      353      351       -2     

Impacted Files	Coverage Δ
memiavl/db.go	57.30% <33.33%> (-0.20%)	⬇️
app/config/config.go	100.00% <100.00%> (ø)
app/memiavl.go	100.00% <100.00%> (ø)
memiavl/multitree.go	71.94% <100.00%> (-1.46%)	⬇️