beforeBreadcrumb, withScope callbacks do not have their Exceptions caught

[krystofwoldrich]

this resolves in the app crashing

• Some callbacks do not have their Exceptions caught yet team-mobile#21

JS sdk doesn't solve this because the website doesn't crash like RN app does

List of callback:

• beforeSend - safe from JS sdk
• 
beforeBreadcrumb
 - not safe - JS sdk won't cahnge it (it doesn't crash a page)
• withScope - not safe - JS sdk won't cahnge it (it doesn't crash a page)
• 

onReady - not safe
• integrations - not safe
• initialScope - deprecated not safe

What should we do with:

• transport - note safe -> create default?
• tracesSampler
 - not safe -> default to 0?

[marandaneto]

@krystofwoldrich I suspect that we've missed one of them:

configureScope:

                Sentry.configureScope((scope: Scope) => {
                  ...
                });

Or is it safe? I guess not.

[krystofwoldrich]

@marandaneto Yes, we missed this one. I'll add it.