Require explicit portal access request IDs

Drop the request-all shortcut so callers always name the
documents, reports, and files to request. TopBar Get Access
now only signs in; bulk selection is the multi-resource path.

Signed-off-by: Émile Ré <emile@probo.com>

pkg/complianceportal/visitor/errors.go

@@ -35,4 +35,5 @@ var (
 	ErrReportNotFound         = errors.New("report not found")
 	ErrPortalFileNotFound     = errors.New("portal file not found")
 	ErrPortalFileNotVisible   = errors.New("portal file not visible")
+	ErrNoAccessTargets        = errors.New("at least one document, report, or file id is required")
 )