fix: reload. Manage unhandled signal on file change

lib/org_garden/watcher.ex

@@ -129,6 +129,17 @@ defmodule OrgGarden.Watcher do
     {:noreply, %{state | processing: false}}
   end
 
+  @impl true
+  def handle_info({:EXIT, _pid_or_port, :normal}, state) do
+    {:noreply, state}
+  end
+
+  @impl true
+  def handle_info({:EXIT, pid_or_port, reason}, state) do
+    Logger.warning("Watcher: unexpected exit from #{inspect(pid_or_port)}: #{inspect(reason)}")
+    {:noreply, state}
+  end
+
   @impl true
   def terminate(reason, state) do
     Logger.info("Watcher: shutting down (#{inspect(reason)})")