Declare directly linked UCX runtime dependencies

Author: vyasr

conda/recipes/libucxx/recipe.yaml

@@ -171,6 +171,7 @@ outputs:
       host:
         - ${{ pin_subpackage("libucxx", exact=True) }}
       run:
+        - ucx >=${{ ucx_min }},<${{ ucx_max }}
         - ${{ pin_subpackage("libucxx", exact=True) }}
       ignore_run_exports:
         by_name:
@@ -202,6 +203,7 @@ outputs:
         - ${{ pin_subpackage("libucxx", exact=True) }}
       run:
         - ${{ pin_compatible("cuda-version", upper_bound="x", lower_bound="x") }}
+        - ucx >=${{ ucx_min }},<${{ ucx_max }}
         - ${{ pin_subpackage("libucxx", exact=True) }}
       ignore_run_exports:
         by_name: