fix(mempool): align temporary rejection check with TxTracker

[almk-dev]

Description

• Adds logic from @mmsqe's fix: align temporary reject check for included tx from txpool #494 and integrates TxTracker changes
• Moves SentRawTransaction() to call_tx.go to be alongside SendTransaction()
• Updates IsTemporaryErr() to string match and check for nonce gap
• Removes redundant pool error vars in favor of imports from geth
• Adds IsTemporaryErr() check to both the response rawLog as well as the error

Closes: #493

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Author Checklist

I have...

• tackled an existing issue or discussed with a team member
• [N/A] left instructions on how to review the changes
  • All changes will be reviewed in feat(mempool): Add TxTracker support for handling temporary rejections #646
• [N/A] targeted the main branch

[codecov]

Codecov Report

❌ Patch coverage is 32.20339% with 80 lines in your changes missing coverage. Please review.
✅ Project coverage is 63.92%. Comparing base (0cf0816) to head (17cea3d).

Files with missing lines	Patch %	Lines
rpc/backend/call_tx.go	32.35%	40 Missing and 29 partials ⚠️
mempool/txpool/locals/errors.go	30.00%	6 Missing and 1 partial ⚠️
mempool/txpool/legacypool/legacypool.go	33.33%	3 Missing and 1 partial ⚠️

❌ Your project check has failed because the head coverage (63.92%) is below the target coverage (90.00%). You can increase the head coverage or adjust the target coverage.

Additional details and impacted files

@@                     Coverage Diff                      @@
##           vlad/integrate-txtracker     #802      +/-   ##
============================================================
- Coverage                     65.18%   63.92%   -1.26%     
============================================================
  Files                           320      320              
  Lines                         21864    21989     +125     
============================================================
- Hits                          14252    14057     -195     
- Misses                         6426     6563     +137     
- Partials                       1186     1369     +183     

Files with missing lines	Coverage Δ
rpc/backend/sign_tx.go	12.00% <ø> (-39.73%)	⬇️
mempool/txpool/legacypool/legacypool.go	65.92% <33.33%> (-17.93%)	⬇️
mempool/txpool/locals/errors.go	30.76% <30.00%> (-69.24%)	⬇️
rpc/backend/call_tx.go	43.16% <32.35%> (-15.59%)	⬇️

... and 1 file with indirect coverage changes

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