Remove ErrorHandler workaround added in 1.14

With [1] we had to introduce a workaround that is going to be likely removed in next 3.18 and 3.19 Camel version [2]. This is a follow up issue to remove such a workaround once the API will be updated in Camel.

[1] https://github.com/apache/camel-k-runtime/commit/0d5a3e9d28485a893a9825aefb4d1c61c6c7b0c9
[2] https://github.com/apache/camel/commit/adc87b142dcb5b81347cce4a1a262c65cd2c98bd

Inspect commit 0d5a3e9d28485a893a9825aefb4d1c61c6c7b0c9 to locate the ErrorHandler workaround, then compare it with the API update described in the Apache Camel commit adc87b142dcb5b81347cce4a1a262c65cd2c98bd. Done means the workaround is removed after the Camel API change is available and the runtime remains compatible.

Written by the indexing model from the issue text.