[INTERNAL] mvc/XMLView: document content aggragtion limitations
[INTERNAL] mvc/XMLView: document content aggragtion limitations

Change-Id: I1b912f52034a4b15efd443bb478060a2c3843eb6
BCP: 1670375105

SQCLabs/openui5,olirogers/openui5,cschuff/openui5,olirogers/openui5,nzamani/openui5,olirogers/openui5,cschuff/openui5,nzamani/openui5,SAP/openui5,SAP/openui5,SQCLabs/openui5,nzamani/openui5,SQCLabs/openui5,SAP/openui5,SAP/openui5,cschuff/openui5