chore(packages/jellyfish-wallet-encrypted): use simple hardTime > easyTime condition to reduce test flakiness

[fuxingloh]

What this PR does / why we need it:

I would forgo this test completely (if this is still causing flakiness) since we can't control (or should not) the CI environment. Tests concurrency within the pipeline (Jest concurrent and Docker spinup) skew "hardTime" and "easyTime" making the test number very unreliable.

We could isolate the tests but frankly too much trouble to prove an otherwise proven theory.

Which issue(s) does this PR fixes?:

Fixes part of #1771

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Codecov Report

Base: 89.43% // Head: 93.35% // Increases project coverage by +3.92% 🎉

Coverage data is based on head (3dbf1e3) compared to base (e5b6f74).
Patch has no changes to coverable lines.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1998      +/-   ##
==========================================
+ Coverage   89.43%   93.35%   +3.92%     
==========================================
  Files         365      366       +1     
  Lines       10977    10985       +8     
  Branches     1431     1432       +1     
==========================================
+ Hits         9817    10255     +438     
+ Misses       1108      701     -407     
+ Partials       52       29      -23     

Impacted Files	Coverage Δ
apps/libs/blockchaincpp/src/BlockchainCppModule.ts	50.00% <0.00%> (-38.24%)	⬇️
...ule.indexer/model/dftx/set.oracle.data.interval.ts	61.40% <0.00%> (-35.09%)	⬇️
...pi/src/module.indexer/model/dftx/appoint.oracle.ts	75.75% <0.00%> (-24.25%)	⬇️
...api/src/module.indexer/model/dftx/update.oracle.ts	74.41% <0.00%> (-23.26%)	⬇️
packages/jellyfish-crypto/src/bech32.ts	79.16% <0.00%> (-20.84%)	⬇️
...api/src/module.indexer/model/dftx/remove.oracle.ts	76.66% <0.00%> (-20.00%)	⬇️
apps/whale-api/src/module.model/oracle.history.ts	84.61% <0.00%> (-15.39%)	⬇️
...ps/whale-api/src/module.model/oracle.price.feed.ts	84.61% <0.00%> (-15.39%)	⬇️
...i/src/module.indexer/model/dftx/set.oracle.data.ts	82.75% <0.00%> (-13.80%)	⬇️
...le-api/src/module.model/oracle.price.aggregated.ts	86.66% <0.00%> (-13.34%)	⬇️
... and 73 more

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