feat: 3626 add option enable license content; disable by default (#3631)

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Signed-off-by: Christopher Phillips <32073428+spiffcs@users.noreply.github.com>

internal/licenses/context.go

@@ -10,9 +10,9 @@ func SetContextLicenseScanner(ctx context.Context, s Scanner) context.Context {
 	return context.WithValue(ctx, licenseScannerKey{}, s)
 }
 
-func ContextLicenseScanner(ctx context.Context) Scanner {
+func ContextLicenseScanner(ctx context.Context) (Scanner, error) {
 	if s, ok := ctx.Value(licenseScannerKey{}).(Scanner); ok {
-		return s
+		return s, nil
 	}
 	return NewDefaultScanner()
 }