Fix Warning coming from ProcessFollowerWidget (#512)

We were passing a wrong thing to the ProcessMonitor constructor,
but because it was just ignored as an extra keyword argument,
it did not manifest as an actual bug.
The functionality itself worked because we were passing
the process uuid by linking the traitlets via `dlink()`.

* Longer default timeout in ProcessFollowerWidget
---------

Co-authored-by: Jusong Yu <jusong.yeu@gmail.com>

aiidalab_widgets_base/process.py

@@ -261,7 +261,7 @@ def __init__(
         self,
         process=None,
         followers=None,
-        update_interval=0.1,
+        update_interval=1.0,
         path_to_root="../",
         **kwargs,
     ):
@@ -302,7 +302,6 @@ def follow(self, detach=False):
 
         if self._monitor is None:
             self._monitor = ProcessMonitor(
-                process=self.process,
                 callbacks=[self.update],
                 on_sealed=self._run_after_completed,
                 timeout=self.update_interval,