fix: use existing deployment nonce during storage migration

[nbaztec]

What 💻

• Use deployment nonce from storage when translating during a EVM <> zkEVM migration, else use zero value.
• Add appropriate debug logs that state inconsistencies may occur due to EVM <> zkEVM mapping.

Why ✋

• We would erroneously override deployment nonce with the transaction nonce.

Evidence 📷

Tests pass

Documentation 📚

Please ensure the following before submitting your PR:

• Check if these changes affect any documented features or workflows.
• Update the book if these changes affect any documented features or workflows.

Notes 📝

• Additional docs PR docs: nonce inconsistencies during storage migration foundry-zksync-book#75

[Karrq]

All good, and I think we should keep the "fork mode" for our in-memory mode even tho we don't need it anymore