[Chore] - move contracts for Prover Beta V4.1 to V4.3 for correctness

[thedarkjester]

This PR implements issue(s) #

Checklist

• I wrote new tests for my new core changes.
• I have successfully ran tests, style checker and build against my new changes locally.
• I have informed the team of any breaking changes if there are any.

---

Note

Updates BlobSubmission tests to use Prover Beta v4.3 data, verifiers, and paths for Sepolia and Mainnet.

• Tests (BlobSubmission.ts):
  • Switch imports and test data from betaV4_1_* to betaV4_3_* for Sepolia and Mainnet.
  • Update verifier factories to src/verifiers/beta-v4.3/* contracts.
  • Rename variables and references from betaV4_1_* to betaV4_3_* throughout.
  • Adjust blob file paths (getVersionedBlobFiles) and file reads to betaV4_3_* directories.
  • Update finalization inputs and expected event/assertion values to match v4.3 datasets.

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[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 65.67%. Comparing base (cbf344e) to head (ae653a6).

Additional details and impacted files

@@            Coverage Diff            @@
##               main    #1737   +/-   ##
=========================================
  Coverage     65.67%   65.67%           
  Complexity     1522     1522           
=========================================
  Files           389      389           
  Lines         14117    14117           
  Branches       1454     1454           
=========================================
  Hits           9271     9271           
  Misses         4236     4236           
  Partials        610      610           

Flag	Coverage Δ		*Carryforward flag
hardhat	96.20% <ø> (ø)
kotlin	63.27% <ø> (ø)		Carriedforward from cbf344e

*This pull request uses carry forward flags. Click here to find out more.

Files with missing lines	Coverage Δ
...s/src/verifiers/beta-v4.3/PlonkVerifierMainnet.sol	100.00% <ø> (ø)
...s/src/verifiers/beta-v4.3/PlonkVerifierSepolia.sol	100.00% <ø> (ø)

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