EventSubscription publicationUrl truncation

This is not documented on the various webhook API documentation pages, but there seems to be a limitation on the length of the PublicationUrl. It seem to be truncated at the 255 bytes boundary. This makes using some platforms webhooks receivers impossible without some kind of proxy. Examples of this would be PowerPlatform/LogicApps custom connectors that generates really long URL with long synthetic domains, path and a lot of parameters in querystring, running above 456 bytes, often more given that it also encodes the name of the flow using the trigger.