fix: improve type safety of helper.tsx

[SimonNRisk]

Purpose

By defining a TransformableValue and TransformableObject type, made of primitives, objects, arrays, and nested structures, we can avoid the use of any in TS. Additionally, I refactored helpers.tsx -> helpers.ts, as without any JSX, the .tsx suffix is unnecessary and confusing

Proof

https://github.com/user-attachments/assets/56ce5970-81dd-4b9b-9ebe-fd138675b3dd