Merge rc testnet fixes

[AdoAdoAdo]

Reasoning behind the pull request

Proposed changes

Testing procedure

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

❌ Patch coverage is 82.65306% with 238 lines in your changes missing coverage. Please review.
✅ Project coverage is 77.57%. Comparing base (6025b67) to head (c5d68ac).

Files with missing lines	Patch %	Lines
epochStart/bootstrap/process.go	69.47%	18 Missing and 11 partials ⚠️
update/factory/exportHandlerFactory.go	58.06%	26 Missing ⚠️
epochStart/bootstrap/storageProcess.go	62.29%	19 Missing and 4 partials ⚠️
process/block/baseProcess.go	84.45%	15 Missing and 8 partials ⚠️
process/track/miniBlockTrack.go	86.77%	9 Missing and 7 partials ⚠️
update/factory/fullSyncInterceptors.go	0.00%	15 Missing ⚠️
consensus/broadcast/delayedBroadcast.go	74.54%	13 Missing and 1 partial ⚠️
process/sync/metablock.go	76.78%	9 Missing and 4 partials ⚠️
process/heartbeat/interceptedPeerAuthentication.go	84.31%	6 Missing and 2 partials ⚠️
sharding/networksharding/peerShardMapper.go	66.66%	5 Missing and 1 partial ⚠️
... and 25 more

Additional details and impacted files

@@                  Coverage Diff                   @@
##           feat/testnet-fixes    #7879      +/-   ##
======================================================
+ Coverage               77.54%   77.57%   +0.02%     
======================================================
  Files                     883      884       +1     
  Lines                  124525   125265     +740     
======================================================
+ Hits                    96564    97169     +605     
- Misses                  21550    21647      +97     
- Partials                 6411     6449      +38     

☔ View full report in Codecov by Harness.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.