Define shared chrome icons once as React components

[kostyafarber]

Problem

Shared chrome icons are stored three ways: SVG files in desktop assets, copies of the same SVGs in packages/editor/src/ui/assets that nothing imports, and inline SVG strings in ShiftIcon rendered with dangerouslySetInnerHTML. Changing an icon means editing several copies, inline strings bypass the SVG pipeline desktop uses, and unused icons cannot be tree-shaken from the SDK bundle.

Expected outcome

Each shared icon has one source and renders as a React component that inherits currentColor, used by both desktop and the SDK.

Acceptance criteria

• Each shared chrome icon is defined once and consumed by desktop and the SDK from that definition.
• Icons render without dangerouslySetInnerHTML and follow the surrounding text color in every theme.
• Unused icon files are removed.
• The SDK bundle includes only icons its components use.