refactor: update TypeScript definitions for custom JSX elements and clean up global declarations in emoji picker (#26985)

web/types/jsx.d.ts

@@ -0,0 +1,13 @@
+// TypeScript type definitions for custom JSX elements
+// Custom JSX elements for emoji-mart web components
+
+import 'react'
+
+declare module 'react' {
+  namespace JSX {
+    // eslint-disable-next-line ts/consistent-type-definitions
+    interface IntrinsicElements {
+      'em-emoji': React.DetailedHTMLProps<React.HTMLAttributes<HTMLElement>, HTMLElement>
+    }
+  }
+}