Copy jobs dark theme (#2308)

* added a dark theme toggle button on Copyjobs next to refresh button and covered full feature

* Fix formatting in Utils.test.ts

* updated infor icon , error icon and text on jobs details page

* rebased from master

* updated the conflicts

* updated the conflicts

* fixed the test suit

* fixed review comments

* test fix

---------

Co-authored-by: Sakshi Gupta <sakshig@microsoft.com>

src/Explorer/Panes/AddCollectionPanel/AddCollectionPanel.tsx

@@ -853,7 +853,7 @@ export class AddCollectionPanel extends React.Component<AddCollectionPanelProps,
 
               {!isSynapseLinkEnabled() && (
                 <Stack className="panelGroupSpacing">
-                  <Text variant="small">
+                  <Text variant="small" style={{ color: "var(--colorNeutralForeground1)" }}>
                     Azure Synapse Link is required for creating an analytical store{" "}
                     {getCollectionName().toLocaleLowerCase()}. Enable Synapse Link for this Cosmos DB account. <br />
                     <Link

src/Explorer/Panes/AddCollectionPanel/__snapshots__/AddCollectionPanel.test.tsx.snap

@@ -475,6 +475,11 @@ exports[`AddCollectionPanel should render Default properly 1`] = `
         className="panelGroupSpacing"
       >
         <Text
+          style={
+            {
+              "color": "var(--colorNeutralForeground1)",
+            }
+          }
           variant="small"
         >
           Azure Synapse Link is required for creating an analytical store

src/Explorer/Panes/PanelLoadingScreen.tsx

@@ -2,7 +2,7 @@ import React from "react";
 import LoadingIndicator_3Squares from "../../../images/LoadingIndicator_3Squares.gif";
 
 export const PanelLoadingScreen: React.FunctionComponent = () => (
-  <div id="loadingScreen" className="dataExplorerLoaderContainer dataExplorerPaneLoaderContainer">
+  <div id="loadingScreen" className="dataExplorerLoaderContainer dataExplorerLoaderforcopyJobs">
     <img className="dataExplorerLoader" src={LoadingIndicator_3Squares} />
   </div>
 );