Log a warning when rate limiting is active

[markushi]

Description

Whe should log this as an warning instead of info:

sentry-java/sentry/src/main/java/io/sentry/transport/RateLimiter.java

Line 80 in 285450b

options.getLogger().log(SentryLevel.INFO, "Envelope discarded due all items rate limited.");

[markushi]

Let's double check if we log warning in non-debug mode too (and check what other SDKs are doing).

[rwachtler]

Do you think it would also make sense to log a warning in case a single envelope item has been dropped due to rate-limiting? Similar to what has been suggested in here.

Regarding the handling of additional noise, sentry-cocoa has getsentry/sentry-cocoa#4467 , I assume that at some point that would be unified across SDKs.

[romtsn]

@rwachtler yes it'd make sense, thanks for pointing that out!