refactor(content-sidebar): convert AnnotationActivityMenu to TypeScript

[devin-ai-integration]

Description

Convert AnnotationActivityMenu component from Flow to TypeScript.

Changes

• Converted AnnotationActivityMenu.js to TypeScript (.tsx)
• Preserved original file as AnnotationActivityMenu.js.flow for Flow compatibility
• Updated ButtonType import to use correct module
• All tests and lint checks pass

Testing

• Ran yarn tsc - no errors
• Ran yarn lint:js and yarn lint:ts - no errors
• Ran yarn test - all tests pass

Link to Devin run: https://app.devin.ai/sessions/d6948181d0e443e9b9e51425f79b9d9e
Requested by: [email protected]

[devin-ai-integration]

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