MLE-13687 Able to use onError in plan builder

[rjrudin]

Regenerated the code so that onError appears on ModifyPlan instead of PlanBuilder.

[rjrudin]

No longer need to modify the generated code, as Jos added support for a string object as the first arg to onError.

[BillFarber]

[2024-04-09T12:47:38.907Z] ErrorListenerInputOutputEndpointTest > testInputOutputCallerWithStop() FAILED
[2024-04-09T12:47:38.907Z] org.opentest4j.AssertionFailedError at ErrorListenerInputOutputEndpointTest.java:219

[2024-04-09T12:48:05.458Z] OpticPatchTest > replaceInsertChild() FAILED
[2024-04-09T12:48:05.458Z] org.opentest4j.AssertionFailedError at OpticPatchTest.java:132

[rjrudin]

[2024-04-09T12:47:38.907Z] ErrorListenerInputOutputEndpointTest > testInputOutputCallerWithStop() FAILED [2024-04-09T12:47:38.907Z] org.opentest4j.AssertionFailedError at ErrorListenerInputOutputEndpointTest.java:219

[2024-04-09T12:48:05.458Z] OpticPatchTest > replaceInsertChild() FAILED [2024-04-09T12:48:05.458Z] org.opentest4j.AssertionFailedError at OpticPatchTest.java:132

The first is one of a handful of intermittent Bulk DS failures.

The second is interesting - it's not related to this PR. I believe a fix was made to 11-nightly because when I added this test yesterday, the expected behavior didn't seem correct. But now it does, and so I updated the test to match the behavior of the server. That behavior is - replaceInsertChild now replaces the existing element with text. It was not doing that yesterday, but it is today.