add outgoing txs inclusion check

[ssd04]

Reasoning behind the pull request

• Shard is stuck check should be included also on v3 paths:
• added shard is stuck check when adding outgoing txs
• when setting num pending miniblocks in shard tracker, added handling for setting the propoer field

Testing procedure

• System testing with induces shard is stuck

Pre-requisites

Based on the Contributing Guidelines the PR author and the reviewers must check the following requirements are met:

• was the PR targeted to the correct branch?
• if this is a larger feature that probably needs more than one PR, is there a feat branch created?
• if this is a feat branch merging, do all satellite projects have a proper tag inside go.mod?

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 77.58%. Comparing base (5adab78) to head (30eb127).
⚠️ Report is 221 commits behind head on feat/testnet-fixes.

Additional details and impacted files

@@                  Coverage Diff                   @@
##           feat/testnet-fixes    #7841      +/-   ##
======================================================
+ Coverage               77.53%   77.58%   +0.04%     
======================================================
  Files                     883      884       +1     
  Lines                  124506   125232     +726     
======================================================
+ Hits                    96536    97155     +619     
- Misses                  21558    21624      +66     
- Partials                 6412     6453      +41     

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[AdoAdoAdo]

I think we are missing also the IsShardStuck(Metachain)