Make catalog feed configuration optional and explicit

scripts/package-boundaries.json

@@ -1434,6 +1434,7 @@
       "src/annotations/worldAnnotationRenderer.js",
       "src/app/catalog.js",
       "src/app/constructCatalog.js",
+      "src/app/sourceComposition.js",
       "src/app/controls.js",
       "src/app/data.js",
       "src/app/errors.js",
@@ -2222,6 +2223,7 @@
       "src/annotations/resolver.js",
       "src/app/catalog.js",
       "src/app/constructCatalog.js",
+      "src/app/sourceComposition.js",
       "src/layers/wind/index.js",
       "src/layers/wind/model.js",
       "src/layers/wind/fields.js",