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This PR standardizes captureException calls across all Sentry JavaScript SDK packages by ensuring every call includes a mechanism object with handled and type properties.

This change provides richer context for captured exceptions, improving their actionability in Sentry:

• handled: Set based on whether the SDK code path explicitly handles the error (e.g., via user-provided fallbacks) or if it's an unexpected, unhandled error.
• type: Specifies the SDK package and, where possible, a more granular context (e.g., nextjs.route, nestjs.graphql, supabase, openai).

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