feat(4337): add toUserOperation utility to convert PackedUserOperation to UserOperation

[jeanregisser]

Why this is needed

Real user need: When analyzing account abstraction transactions, or working with existing PackedUserOperation data, you often need the unpacked format to use with functions that expect the standard UserOperation format (e.g. getUserOperationHash).

The gap: Bundlers and newer EntryPoints use packed format for efficiency, but there's no built-in way to convert back to the unpacked format when needed for analysis or compatibility.

What it does

Converts packed user operations to standard unpacked format by splitting combined fields:

• accountGasLimits → separate verificationGasLimit + callGasLimit
• gasFees → separate maxPriorityFeePerGas + maxFeePerGas
• paymasterAndData → separate paymaster fields
• initCode → separate factory + factoryData

Works across all EntryPoint versions and safe to call on already unpacked data. This completes the conversion utilities - now you can go both ways between packed and unpacked formats.

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[changeset-bot]

🦋 Changeset detected

Latest commit: 95750b5

The changes in this PR will be included in the next version bump.

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[jxom]

Let's use UserOperation.from from Ox for this.