Add metadata to configuration exceptions

[DaveCTurner]

... instead of using headers.

Similarly to #27724, there is some exception metadata that is included in headers rather than using addMetadata(), introduced in #19318.

elasticsearch/core/src/main/java/org/elasticsearch/ingest/ConfigurationUtils.java

Lines 346 to 354 in 2e36f19

	if (processorType != null) {
	exception.addHeader("processor_type", processorType);
	}
	if (processorTag != null) {
	exception.addHeader("processor_tag", processorTag);
	}
	if (propertyName != null) {
	exception.addHeader("property_name", propertyName);
	}

Under the umbrella of #27672, it'd be preferable to use addMetadata() to reduce the number of ways that clients have to handle errors.

/cc @simonw and @talevy for further opinions.