Fix inserting order in regular cases

[gam6itko]

Close #380

[codecov]

Codecov Report

Attention: 2 lines in your changes are missing coverage. Please review.

Comparison is base (31e29e4) 91.51% compared to head (a6662af) 91.49%.

❗ Current head a6662af differs from pull request most recent head 23db770. Consider uploading reports for the commit 23db770 to get more accurate results

Files	Patch %	Lines
src/Transaction/Pool.php	91.66%	2 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##                2.x     #381      +/-   ##
============================================
- Coverage     91.51%   91.49%   -0.02%     
- Complexity     1804     1811       +7     
============================================
  Files           114      115       +1     
  Lines          4582     4587       +5     
============================================
+ Hits           4193     4197       +4     
- Misses          389      390       +1     

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