feat(build): Remove manual chunks from Vite configs

[AntonioVentilii]

Motivation

Removed the custom manualChunks configuration from the Vite build. Vite’s default Rollup strategy now handles chunk splitting automatically, producing more efficient bundles and better code-splitting without forcing all unmatched modules into a single chunk.

[Copilot]

Pull Request Overview

This PR removes the custom manualChunks configuration from the Vite build setup, allowing Vite's default Rollup strategy to handle chunk splitting automatically. This simplifies the build configuration and relies on Vite's built-in optimization for efficient bundling.

• Removed custom chunk splitting logic that categorized dependencies into 'vendor', 'lazy', and 'index' chunks
• Removed unused dirname import from 'node:path'

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[peterpeterparker]

I would first just add an exception to chunks the translatations, as it is the matter that triggered this, WDYT?