fix(transaction): disable cairo0 redeclaration

[meship-starkware]

…e in declare V0 and V1

---

This change is 

[meship-starkware]

I still need to add a test to see that it works.

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 85.29412% with 5 lines in your changes missing coverage. Please review.

Project coverage is 80.20%. Comparing base (9e9a26c) to head (724f34d). Report is 37 commits behind head on main.

Files	Patch %	Lines
crates/blockifier/src/transaction/transactions.rs	82.75%	3 Missing and 2 partials :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #2014 +/- ## ========================================== + Coverage 80.17% 80.20% +0.03% ========================================== Files 69 69 Lines 9739 9762 +23 Branches 9739 9762 +23 ========================================== + Hits 7808 7830 +22 - Misses 1471 1473 +2 + Partials 460 459 -1 ```

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[meship-starkware]

crates/blockifier/src/versioned_constants.rs line 54 at r7 (raw file):

Previously, barak-b-starkware wrote…

I would guess that the default, in this case, is `false`, that's true? Is that what what we want?

It's true by default, which surprised me as well. I have tried writing #[serde(default="true")] but I got an error

[barak-b-starkware]

crates/blockifier/src/transaction/transactions.rs line 218 at r11 (raw file):

                        // is set to zero. Here, we take advantage of this fact and set
                        // the CCH to zero in the writes compiled class hashes, so it will not
                        // affect the diff between the initial and the writes.

Suggestion:

                        // For undeclared contract classes, when trying to get the compiled contract class, the initial compiled class hash
                        // is set to zero. Here, we take advantage of this fact and set
                        // the compiled class hash to zero to match the compiled class hashes writes and reads, so it will not
                        // affect the state diff.