(catalogd) serveJSON lines instead of http.serverContent for no-params (#1725)

The metas endpoint was using `serverJSONLines` for serving queries that are
parameterized, which copies content from a reader to the response writer under
the hood. As a result no-parameterized query responses don't have range request
support.

The endpoint was however using `http.ServeContent` for cases when no parameters
were provided, which does have range request support.

This PR switches the `http.ServeContent` out for `serveJSONLines` to make sure
metas endpoint is consistent in it's lack of support for range requests.

Signed-off-by: Anik Bhattacharjee <[email protected]>

Author: anik120

catalogd/internal/storage/localdir.go

@@ -257,8 +257,7 @@ func (s *LocalDirV1) handleV1Metas(w http.ResponseWriter, r *http.Request) {
 
 	if schema == "" && pkg == "" && name == "" {
 		// If no parameters are provided, return the entire catalog (this is the same as /api/v1/all)
-		w.Header().Add("Content-Type", "application/jsonl")
-		http.ServeContent(w, r, "", catalogStat.ModTime(), catalogFile)
+		serveJSONLines(w, r, catalogFile)
 		return
 	}
 	idx, err := s.getIndex(catalog)