Made tendermint reactors open channels in constructor

[pompon0]

Made tendermint reactors open channels in constructor, rather than expect the channels to be set externally. It is more manageable this way. Also moved SendError method from Channel to PeerManager.

[github-actions]

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Build	Format	Lint	Breaking	Updated (UTC)
✅ passed	✅ passed	✅ passed	✅ passed	Oct 27, 2025, 1:38 PM

[codecov]

Codecov Report

❌ Patch coverage is 53.71025% with 131 lines in your changes missing coverage. Please review.
✅ Project coverage is 43.33%. Comparing base (6ef9735) to head (d67fe2e).
⚠️ Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
sei-tendermint/internal/dbsync/reactor.go	0.00%	49 Missing ⚠️
sei-tendermint/internal/consensus/reactor.go	64.70%	17 Missing and 7 partials ⚠️
sei-tendermint/node/node.go	50.00%	6 Missing and 6 partials ⚠️
sei-tendermint/internal/statesync/reactor.go	64.00%	5 Missing and 4 partials ⚠️
sei-tendermint/internal/p2p/testonly.go	27.27%	7 Missing and 1 partial ⚠️
sei-tendermint/internal/blocksync/reactor.go	57.14%	5 Missing and 1 partial ⚠️
sei-tendermint/internal/evidence/reactor.go	78.26%	3 Missing and 2 partials ⚠️
sei-tendermint/internal/mempool/reactor.go	76.19%	3 Missing and 2 partials ⚠️
sei-tendermint/internal/p2p/peermanager.go	70.58%	4 Missing and 1 partial ⚠️
sei-tendermint/node/setup.go	60.00%	2 Missing and 2 partials ⚠️
... and 2 more

❌ Your patch status has failed because the patch coverage (53.71%) is below the target coverage (70.00%). You can increase the patch coverage or adjust the target coverage.
❌ Your project status has failed because the head coverage (47.03%) is below the target coverage (50.00%). You can increase the head coverage or adjust the target coverage.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2487      +/-   ##
==========================================
- Coverage   43.33%   43.33%   -0.01%     
==========================================
  Files        1650     1650              
  Lines      139967   139993      +26     
==========================================
+ Hits        60658    60662       +4     
+ Misses      73975    73964      -11     
- Partials     5334     5367      +33     

Flag	Coverage Δ
sei-chain	31.48% <ø> (-0.01%)	⬇️
sei-cosmos	52.37% <ø> (+<0.01%)	⬆️
sei-db	69.06% <ø> (ø)
sei-tendermint	47.02% <53.71%> (-0.01%)	⬇️
sei-wasmd	45.81% <ø> (-0.03%)	⬇️
sei-wasmvm	40.37% <ø> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

Files with missing lines	Coverage Δ
sei-tendermint/internal/p2p/channel.go	80.95% <ø> (+4.16%)	⬆️
sei-tendermint/internal/p2p/router.go	74.05% <100.00%> (+0.21%)	⬆️
sei-tendermint/internal/p2p/pex/reactor.go	78.08% <86.66%> (-1.01%)	⬇️
sei-tendermint/node/seed.go	49.15% <50.00%> (-1.28%)	⬇️
sei-tendermint/node/setup.go	68.40% <60.00%> (-0.97%)	⬇️
sei-tendermint/internal/evidence/reactor.go	72.88% <78.26%> (+6.80%)	⬆️
sei-tendermint/internal/mempool/reactor.go	70.51% <76.19%> (-1.49%)	⬇️
sei-tendermint/internal/p2p/peermanager.go	76.15% <70.58%> (-0.55%)	⬇️
sei-tendermint/internal/blocksync/reactor.go	58.69% <57.14%> (+2.65%)	⬆️
sei-tendermint/internal/p2p/testonly.go	70.37% <27.27%> (-0.13%)	⬇️
... and 4 more

... and 12 files with indirect coverage changes

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