FIX: [xalign] add more complex test case for xalign strategy

[c9s]

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[bbgokarma-bot]

Welcome back! @c9s, This pull request may get 454 BBG.

[codecov]

Codecov Report

Attention: Patch coverage is 65.21739% with 8 lines in your changes are missing coverage. Please review.

Project coverage is 22.59%. Comparing base (3e14c14) to head (aced149).
Report is 2 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1593      +/-   ##
==========================================
+ Coverage   22.53%   22.59%   +0.06%     
==========================================
  Files         618      619       +1     
  Lines       44528    44830     +302     
==========================================
+ Hits        10034    10130      +96     
- Misses      33779    33973     +194     
- Partials      715      727      +12     

Files	Coverage Δ
pkg/bbgo/session.go	8.22% <0.00%> (-0.03%)	⬇️
pkg/strategy/xalign/strategy.go	33.80% <71.42%> (ø)

... and 2 files with indirect coverage changes

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[bbgokarma-bot]

Hi @c9s,

Well done! 464 BBG has been sent to your polygon wallet. Please check the following tx:

https://polygonscan.com/tx/0x990b0971cc41a05cc2cd6a2ffbea25efbd0ff12a5652d41d519b5d0e4e255637

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