style: refactor build leading function style, width, and padding parameters for custom node leading builder

[EchoEllet]

Description

Move the style logic from a conditional expression into a function call for improved readability.

The refactoring simplifies the code by replacing nested ternary operators with if statements, improving the readability a bit.

Related Issues

• Related Feat: custom leading builder #2146

Type of Change

• ✨ New feature: Adds new functionality without breaking existing features.
• 🛠️ Bug fix: Resolves an issue without altering current behavior.
• 🧹 Code refactor: Code restructuring that does not affect behavior.
• ❌ Breaking change: Alters existing functionality and requires updates.
• 🧪 Tests: Adds new tests or modifies existing tests.
• 📝 Documentation: Updates or additions to documentation.
• 🗑️ Chore: Routine tasks, or maintenance.
• ✅ Build configuration change: Changes to build or deploy processes.

[CatHood0]

I hadn't thought of this! This refactoring makes it much easier for anyone to read. Thanks for the change.

We could use this PR to do the same with other parameters that have this one.

[CatHood0]

Nice! Thanks for taking the time to do these changes.