Replace SelectSize v1 with SelectSize v2

[gustedeveloper]

Once the new TreeFile component with SelectSize v2 is merged, we need to completely replace the old SelectSize v1 with SelectSize v2 across the codebase.

Tasks:

• Update all usages to SelectSize v2
• Configure Icon component to work with SelectSize v2
• Cleanup any leftover references or imports
• Remove SelectSize v1
• Change name of SelectSize V2 just to SelectSize

SelectSize v2 was introduced to allow shape-specific size customization (instead of the fixed 5 sizes in v1). After the migration, v1 should be removed to avoid duplication and confusion.