BUG : Excessive retrying

[andreasgangso]

Describe the bug
I'm going to keep this short because @desusai7 already knows the details here.

But basically, RSCloudModeManager is only handing some specific response states, and is missing at least BAD_REQUEST. Should probably have an else {} to catch all edge cases.

rudder-sdk-ios/Sources/Classes/RSCloudModeManager.m

Line 71 in d478c23

else if (response.state == NETWORK_ERROR) {

This results in it retrying the same payload on every loop, which is like ~10 requests per second.

[andreasgangso]

For the record, this was noticed through rudderlabs/rudder-sdk-flutter#116, where gzip payloads were sent to an old rudder-server without gzip support, which was causing the response to be 400 BAD_REQUEST.