fix(bun) Export pinoIntegration from @sentry/node

[LudvigHz]

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Resolves #17989

[chargome]

@timfish not sure if the pino integration works properly on bun due to TracingChannel – anyway we need to either merge this or update the docs for it.

[timfish]

I think Bun supports TracingChannel so it could work with the latest versions of Pino that include a TracingChannel.

What won't work is the code injection via ESM loader hook because Bun doesn't support them. If loader hook registration is simply a no-op in Bun, it might just work with the latest versions of Pino without causing runtime errors?

@LudvigHz have you tested this working with Bun?

[s1gr1d]

Bun supports the tracing channel, but they do not publish to the channels we use for the instrumentation.

More about that here: #17779 (comment)