fix: update alert method signature to accept string type (microsoft#2006)

Co-authored-by: saschanaz <saschanaz@users.noreply.github.com>

Author: Bashamega

baselines/dom.generated.d.ts

@@ -28393,7 +28393,7 @@ interface Window extends EventTarget, AnimationFrameProvider, GlobalEventHandler
     /** [MDN Reference](https://developer.mozilla.org/docs/Web/API/Window/window) */
     readonly window: Window & typeof globalThis;
     /** [MDN Reference](https://developer.mozilla.org/docs/Web/API/Window/alert) */
-    alert(message?: any): void;
+    alert(message?: string): void;
     /**
      * @deprecated
      *
@@ -30046,7 +30046,7 @@ declare var visualViewport: VisualViewport | null;
 /** [MDN Reference](https://developer.mozilla.org/docs/Web/API/Window/window) */
 declare var window: Window & typeof globalThis;
 /** [MDN Reference](https://developer.mozilla.org/docs/Web/API/Window/alert) */
-declare function alert(message?: any): void;
+declare function alert(message?: string): void;
 /**
  * @deprecated
  *

baselines/ts5.5/dom.generated.d.ts

@@ -28371,7 +28371,7 @@ interface Window extends EventTarget, AnimationFrameProvider, GlobalEventHandler
     /** [MDN Reference](https://developer.mozilla.org/docs/Web/API/Window/window) */
     readonly window: Window & typeof globalThis;
     /** [MDN Reference](https://developer.mozilla.org/docs/Web/API/Window/alert) */
-    alert(message?: any): void;
+    alert(message?: string): void;
     /**
      * @deprecated
      *
@@ -30024,7 +30024,7 @@ declare var visualViewport: VisualViewport | null;
 /** [MDN Reference](https://developer.mozilla.org/docs/Web/API/Window/window) */
 declare var window: Window & typeof globalThis;
 /** [MDN Reference](https://developer.mozilla.org/docs/Web/API/Window/alert) */
-declare function alert(message?: any): void;
+declare function alert(message?: string): void;
 /**
  * @deprecated
  *

baselines/ts5.6/dom.generated.d.ts

@@ -28393,7 +28393,7 @@ interface Window extends EventTarget, AnimationFrameProvider, GlobalEventHandler
     /** [MDN Reference](https://developer.mozilla.org/docs/Web/API/Window/window) */
     readonly window: Window & typeof globalThis;
     /** [MDN Reference](https://developer.mozilla.org/docs/Web/API/Window/alert) */
-    alert(message?: any): void;
+    alert(message?: string): void;
     /**
      * @deprecated
      *
@@ -30046,7 +30046,7 @@ declare var visualViewport: VisualViewport | null;
 /** [MDN Reference](https://developer.mozilla.org/docs/Web/API/Window/window) */
 declare var window: Window & typeof globalThis;
 /** [MDN Reference](https://developer.mozilla.org/docs/Web/API/Window/alert) */
-declare function alert(message?: any): void;
+declare function alert(message?: string): void;
 /**
  * @deprecated
  *

inputfiles/overridingTypes.jsonc

@@ -718,7 +718,7 @@
                     "method": {
                         "alert": {
                             "overrideSignatures": [
-                                "alert(message?: any): void"
+                                "alert(message?: string): void"
                             ]
                         },
                         "postMessage": {