test(starknet_client): fix feeder gw integration test

[DvirYo-starkware]

Pull Request type

Please check the type of change your PR introduces:

• Bugfix
• Feature
• Code style update (formatting, renaming)
• Refactoring (no functional changes, no API changes)
• Build-related changes
• Documentation content changes
• Other (please describe):

What is the current behavior?

Issue Number: N/A

What is the new behavior?

Does this introduce a breaking change?

• Yes
• No

Other information

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This change is 

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 69.99%. Comparing base (e3b85bd) to head (d5c0319).
Report is 86 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1963      +/-   ##
==========================================
- Coverage   70.45%   69.99%   -0.47%     
==========================================
  Files         130      130              
  Lines       17011    17069      +58     
  Branches    17011    17069      +58     
==========================================
- Hits        11985    11947      -38     
- Misses       3687     3784      +97     
+ Partials     1339     1338       -1     

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[yair-starkware]

Reviewable status: 0 of 1 files reviewed, 1 unresolved discussion (waiting on @DvirYo-starkware and @ShahakShama)

a discussion (no related file):
Why don't we keep jsons instead of calling the FGW

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[DvirYo-starkware]

Reviewable status: 0 of 1 files reviewed, 1 unresolved discussion (waiting on @matan-starkware, @ShahakShama, and @yair-starkware)

a discussion (no related file):

Previously, yair-starkware (Yair) wrote…

Why don't we keep jsons instead of calling the FGW

1. Dan doesn't want to put effort into it, and the simple way is just to fix this.
2. there is some value in doing it against the real fgw. The format of queries, check if something was changed retroactively, and get the last block.

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[github-actions]

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