Fix JSX types

packages/react-godot-renderer/src/jsx.ts

@@ -1,4 +1,5 @@
 import type * as Godot from "godot"
+import type { CamelCase } from "type-fest"
 
 
 type NodeClass = {
@@ -7,25 +8,23 @@ type NodeClass = {
         : never
 }[keyof typeof Godot]
 
-type DecapitalizeString<S extends string> = S extends `${infer F}${infer R}` ? `${Lowercase<F>}${R}` : S
-
 type PropsFromInstance<T> = {
     // biome-ignore lint/complexity/noBannedTypes: it's completely fine
     [K in keyof T as T[K] extends Function ? never : K]?: T[K]
 }
 
 type GodotIntrinsicElements = {
-    [K in NodeClass as DecapitalizeString<K>]: PropsFromInstance<InstanceType<(typeof Godot)[K]>>
+    [K in NodeClass as CamelCase<K>]: PropsFromInstance<InstanceType<(typeof Godot)[K]>>
 } & {
     custom: {
         class: new (...args: any[]) => Godot.Node
     }
 }
 
-// declare global {
-    declare namespace React {
+declare global {
+    namespace React {
         namespace JSX {
             interface IntrinsicElements extends GodotIntrinsicElements {}
         }
     }
-// }
+}