Update compute_order in ComponentGraph to be a read-only property

docs/source/release_notes.rst

@@ -13,6 +13,7 @@ Release Notes
     * Changes
         * Replaced `allowed_pipelines` with `allowed_component_graphs` :pr:`2364`
         * Removed private method ``_compute_features_during_fit`` from ``PipelineBase`` :pr:`2359`
+        * Updated ``compute_order`` in ``ComponentGraph`` to be a read-only property :pr:`2408`
         * Unpinned PyZMQ version in requirements.txt :pr:`2389` 
         * Uncapping LightGBM version in requirements.txt :pr:`2405`
         * Updated minimum version of plotly :pr:`2415`

evalml/pipelines/component_graph.py

@@ -37,10 +37,15 @@ def __init__(self, component_dict=None, random_seed=0):
                 )
             component_class = handle_component_class(component_info[0])
             self.component_instances[component_name] = component_class
-        self.compute_order = self.generate_order(self.component_dict)
         self.input_feature_names = {}
         self._feature_provenance = {}
         self._i = 0
+        self._compute_order = self.generate_order(self.component_dict)
+
+    @property
+    def compute_order(self):
+        """The order that components will be computed or called in."""
+        return self._compute_order
 
     @property
     def default_parameters(self):