chore: remove four modules nothing in the app uses (#1403)

* chore: remove four modules nothing in the app uses

src/app/sourceSlot.js re-exported src/sources/sourceSlot.js, which every
caller imports directly. src/data/flowTiles.js and src/data/issPass.js were
reached only by their own tests. src/data/localGeojson.js wrapped
localGeojsonCore.js with the app's services, which the catalog already
passes itself. The local GeoJSON layer tests now build layers the way the
catalog does, so they keep covering localGeojsonCore.js; only the test of
the wrapper's own default host goes. Boundary lists, format scope and docs
drop the removed paths.

* docs: changelog for #1403

scripts/check-import-directions.mjs

@@ -153,14 +153,6 @@ export function checkImportDirections(root) {
           file,
           'Actions must consume feed state without the manager facade',
         );
-      if (
-        file === 'src/app/constructCatalog.js' &&
-        to === 'src/data/localGeojson.js'
-      )
-        report(
-          file,
-          'Catalog must use the services owner without compatibility layer construction',
-        );
     }
     return record;
   }