[Query Copilot] Maintain Query Copilot state when switching tabs (#1559)

* Sample implementation for saving states

* Maintaining Query Copilot state

* Fixing failed PR checks

* Additional changes based on checks

* snapshots updated

* Changes based on merging previous PR

* test mock changed

* Fixing minor bug for close button

* Destruct of queryCopilotState

* passing only function in Tabs component

* Maintaining copilot state with zustand store

* additional test changes

* test snapshot updated

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Co-authored-by: Predrag Klepic <v-prklepic@microsoft.com>

src/Explorer/QueryCopilot/__snapshots__/QueryCopilotTab.test.tsx.snap

@@ -67,10 +67,10 @@ exports[`Query copilot tab snapshot test should render with initial input 1`] =
             },
           }
         }
-        value="Write a query to return all records in this table"
+        value=""
       />
       <CustomizedIconButton
-        disabled={false}
+        disabled={true}
         iconProps={
           Object {
             "iconName": "Send",