Dark theme for Explorer (#2185)

* First dark theme commits for command bar

* Updated theme on sidebar

* Updated tabs, sidebar, splash screen

* settings theme changes

* Dark theme applied to Monaco editor

* Dark theme to stored procedures

* Fixed sidebar scroll

* Updated scroll issue in sidebar

* Command bar items fixed

* Fixed lint errors

* fixed lint errors

* settings side panel fixed

* Second last iteration for css

* Fixed all the issues of css

* Updated the theme icon for now on DE to change the theme from portal/DE itself

* Formatting issue resolved

* Remove CloudShellTerminalComponent changes - revert to master version

* Fixed test issue

* Fixed formatting issue

* Fix tests: update snapshots and revert xterm imports for compatibility

* Fix xterm imports in CloudShellTerminalComponent to use @xterm packages

* Fix Cloud Shell component imports for compatibility

* Update test snapshots

* Fix xterm package consistency across all CloudShell components

* Fix TypeScript compilation errors in CloudShell components and query Documents

- Standardized xterm package imports across CloudShell components to use legacy 'xterm' package
- Fixed Terminal type compatibility issues in CommonUtils.tsx
- Added type casting for enableQueryControl property in queryDocuments.ts to handle Azure Cosmos SDK interface limitations
- Applied code formatting to ensure consistency

* Update failing snapshot tests

- Updated TreeNodeComponent snapshot tests for loading states
- Updated ThroughputInputAutoPilotV3Component snapshots for number formatting changes (10,00,000 -> 1,000,000)
- All snapshot tests now pass

* Fixed test issue

* Fixed test issue

* Updated the buttons for theme

* Updated the Theme changes based on portal theme changes

* Updated review comments

* Updated the duplicate code and fixed the fabric react error

* Few places styling added and resolving few comments

* Fixed errors

* Fixed comments

* Fixed comments

* Fixed comments

* Fixed full text policy issue for mongoru accounts

* Resolved comments for class Name and few others

* Added css for homepage in ru accounts

* Final commit with all the feedback issues resolved

* Lint error resolved

* Updated the review comments and few Ui issues

* Resolved review comments and changed header bg and active state color

* Moved svg code to different file and imported

* css fixed for the hpome page boxed for ru account

* Lint errors

* Fixed boxes issue in ru accounts

* Handled the initial theme from the portal

* Updated snap

* Update snapshots for TreeNodeComponent and CreateCopyJobScreensProvider tests

* Fix duplicate DataExplorerRoot test id causing Playwright strict mode violation

* Fix locale-dependent number formatting in ThroughputInputAutoPilotV3Component

---------

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

src/Explorer/Controls/Dialog.tsx

@@ -179,8 +179,18 @@ export const Dialog: FC = () => {
       title,
       subText,
       styles: {
-        title: { fontSize: DIALOG_TITLE_FONT_SIZE, fontWeight: DIALOG_TITLE_FONT_WEIGHT },
-        subText: { fontSize: DIALOG_SUBTEXT_FONT_SIZE },
+        title: {
+          fontSize: DIALOG_TITLE_FONT_SIZE,
+          fontWeight: DIALOG_TITLE_FONT_WEIGHT,
+        },
+        subText: {
+          fontSize: DIALOG_SUBTEXT_FONT_SIZE,
+          color: "var(--colorNeutralForeground2)",
+        },
+        content: {
+          backgroundColor: "var(--colorNeutralBackground1)",
+          color: "var(--colorNeutralForeground1)",
+        },
       },
       showCloseButton: showCloseButton || false,
       onDismiss,
@@ -188,18 +198,60 @@ export const Dialog: FC = () => {
     modalProps: { isBlocking: isModal, isDarkOverlay: false },
     minWidth: DIALOG_MIN_WIDTH,
     maxWidth: DIALOG_MAX_WIDTH,
+    styles: {
+      main: {
+        backgroundColor: "var(--colorNeutralBackground1)",
+        selectors: {
+          ".ms-Dialog-title": { color: "var(--colorNeutralForeground1)" },
+        },
+      },
+    },
   };
 
   const primaryButtonProps: IButtonProps = {
     text: primaryButtonText,
     disabled: primaryButtonDisabled || false,
     onClick: onPrimaryButtonClick,
+    styles: {
+      root: {
+        backgroundColor: "var(--colorBrandBackground)",
+        color: "var(--colorNeutralForegroundOnBrand)",
+        selectors: {
+          ":hover": {
+            backgroundColor: "var(--colorBrandBackgroundHover)",
+            color: "var(--colorNeutralForegroundOnBrand)",
+          },
+          ":active": {
+            backgroundColor: "var(--colorBrandBackgroundPressed)",
+            color: "var(--colorNeutralForegroundOnBrand)",
+          },
+        },
+      },
+    },
   };
   const secondaryButtonProps: IButtonProps =
     secondaryButtonText && onSecondaryButtonClick
       ? {
           text: secondaryButtonText,
           onClick: onSecondaryButtonClick,
+          styles: {
+            root: {
+              backgroundColor: "var(--colorNeutralBackground2)",
+              color: "var(--colorNeutralForeground1)",
+              borderColor: "var(--colorNeutralStroke1)",
+              selectors: {
+                ":hover": {
+                  backgroundColor: "var(--colorNeutralBackground3)",
+                  color: "var(--colorNeutralForeground1)",
+                },
+                ":active": {
+                  backgroundColor: "var(--colorNeutralBackground3)",
+                  color: "var(--colorNeutralForeground1)",
+                  borderColor: "var(--colorCompoundBrandStroke1)",
+                },
+              },
+            },
+          },
         }
       : undefined;
   return visible ? (