feat(data-weaver): Icons normalization

[pablonoel]

Overview

Standardizes icon assets by migrating various SVG icons to Material Symbols, using https://fonts.google.com/icons, as reference.

Changes Made

• Update viewBox to 960x960 and path data
• Replacing outdated icons like IconHand and IconLineGraphDouble
• Iintroducing CSS variables (--icon-size-small and --icon-size-medium) to manage icon sizing consistently
• Redrawing of custom icons: Narrative.tsx and Shapes.tsx to visually match the specs of the rest
• Replacing import icons from download, to upload, and upload file

Testing Done

Describe the steps you took to test these changes (please also list commands ran if possible).

• Unit tests passed
• Integration tests passed
• Manual verification

Checklist

• I have followed the style guidelines of this project.
• I have commented my code, particularly in hard-to-understand areas.
• My changes generate no new warnings.

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[gemini-code-assist]

Code Review

This pull request standardizes icon assets by migrating various SVG icons to Material Symbols (updating their viewBox to 960x960 and path data), replacing outdated icons like IconHand and IconLineGraphDouble, and introducing CSS variables (--icon-size-small and --icon-size-medium) to manage icon sizing consistently. Feedback on these changes highlights two main issues: first, aliasing IconImport to IconDownload introduces a visual mismatch with IconExport, so a dedicated horizontal bracket-and-arrow SVG path is suggested; second, the .icon-status class in card.module.scss was incorrectly downsized to --icon-size-small and should instead use --icon-size-medium to preserve its original 24px proportions.