Extend BunOptions with NodeOptions

[JPeer264]

Description

It seems that the init function of @sentry/bun passes everything down to the init of @sentry/node:

sentry-javascript/packages/bun/src/sdk.ts

Line 116 in 167b6db

return initNode(options);

However we have separate BunOptions available for the init of bun, which causes fixes such as #18436 or #17349. If we e.g. extend the NodeOptions, we won't have a problem anymore, but we need to verify if that wouldn't cause any issues.

[linear]

JS-1272