Callback panics and out of gas errors are not emitted in events

[srdtrk]

Summary of Bug

The events should indicate that an error occurred during the callback if the callback cannot be executed due to a panic or an oog error. Currently, in these two cases, the event indicates that the callback was "successful".

Expected Behaviour

The callback event is emitted as a "failure" and a description of the error is given.

Version

modules/apps/callbacks/v0.1.0+ibc-go-v7.3

Steps to Reproduce

Both cases are clearly tested here. So this issue is already reproduced.

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