The requirement to declare DataClassification explicitly in a tableextension
applies to the Normal fields it adds; FlowFields and FlowFilters are
SystemMetadata automatically and are covered by their own article. Being
added by a table extension is also not itself a finding - the finding is a
Normal field added by a table extension that has no valid explicit
DataClassification.
Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com>