chore: Enhance Call Tracer Performance and Code Reliability

[crStiv]

What does it do?

• Optimizes Call Tracer implementation with early exit for empty transactions
• Improves memory allocation efficiency using Vec::with_capacity
• Refactors trace address comparison logic into a dedicated function
• Adds better error handling and deserialization safety measures

What important points reviewers should know?

• All changes are internal optimizations and don't modify external behavior
• Added #[serde(default)] attributes to improve deserialization robustness
• The new compare_trace_address function simplifies the comparison logic while maintaining the same sorting behavior
• All existing tests pass without modifications

Is there something left for follow-up PRs?

• Could add specific unit tests for the new compare_trace_address function
• Potential for similar optimizations in other formatters
• Could consider adding performance benchmarks

What alternative implementations were considered?

• Considered keeping the comparison logic inline but chose extraction for better maintainability
• Evaluated using BTreeMap for trace address storage but current Vec implementation proved more efficient
• Considered more aggressive optimizations but prioritized code clarity

Are there relevant PRs or issues in other repositories?

No related PRs or issues in Substrate, Polkadot, Frontier, or Cumulus repositories as these changes are specific to Moonbeam's EVM tracing implementation.

What value does it bring to the blockchain users?

• Improved performance for EVM trace collection, especially for complex transactions
• More reliable handling of trace data
• Better maintainability of the codebase which leads to easier future improvements
• More robust error handling which helps with debugging and troubleshooting

[RomarQ]

Suggested change

	#[serde(skip_serializing_if = "Vec::is_empty")]
	#[serde(default)]
	#[serde(default, skip_serializing_if = "Vec::is_empty")]

[RomarQ]

Suggested change

	#[serde(skip_serializing_if = "Option::is_none")]
	#[serde(default)]
	#[serde(default, skip_serializing_if = "Option::is_none")]

[RomarQ]

Added some remarks

[crStiv]

Hey Rodrigo, made an update, did I understand you right? @RomarQ