fix: Optimism Sepolia hardfork

[Wodann]

This fixes an incorrect chain ID for the OP Sepolia testnet.

It also adds a test. To support this test, I needed to perform a small refactor to expose the ProviderTestFixture and make it chain-specific.

[changeset-bot]

⚠️ No Changeset found

Latest commit: 3262115

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[codecov]

Codecov Report

Attention: Patch coverage is 66.20690% with 49 lines in your changes missing coverage. Please review.

Project coverage is 53.51%. Comparing base (e977cf2) to head (3262115).
Report is 1 commits behind head on feat/multichain.

Files with missing lines	Patch %	Lines
crates/edr_provider/src/data.rs	7.69%	0 Missing and 36 partials ⚠️
crates/edr_provider/src/test_utils.rs	92.00%	0 Missing and 8 partials ⚠️
crates/edr_provider/src/requests/eth/gas.rs	0.00%	0 Missing and 4 partials ⚠️
...ates/edr_provider/src/requests/eth/transactions.rs	0.00%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@                 Coverage Diff                 @@
##           feat/multichain     #725      +/-   ##
===================================================
- Coverage            53.51%   53.51%   -0.01%     
===================================================
  Files                  236      236              
  Lines                27743    27742       -1     
  Branches             27743    27742       -1     
===================================================
- Hits                 14847    14846       -1     
  Misses               11977    11977              
  Partials               919      919              

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[agostbiro]

Thanks, LGTM!