fix(image,react-pdf): resolve Buffer/stream type errors breaking build

@resvg/resvg-js's asPng() and @react-pdf/renderer's renderToBuffer()
return Node Buffer, which no longer satisfies the declared Uint8Array
return types under the current @types/node/TypeScript resolution,
failing dts builds (and therefore the release workflow's build step).
Wrap the Buffers in zero-copy Uint8Array views.

renderToStream() was declared as returning a web ReadableStream, but
@react-pdf/renderer's renderToStream() actually resolves to a
NodeJS.ReadableStream; declare what it really returns.

packages/image/src/render.tsx

@@ -206,5 +206,6 @@ export async function renderToPng(
 
   const resvg = new Resvg(svg);
   const pngData = resvg.render();
-  return pngData.asPng();
+  const png = pngData.asPng();
+  return new Uint8Array(png.buffer, png.byteOffset, png.byteLength);
 }

packages/react-pdf/src/render.tsx

@@ -153,7 +153,8 @@ export async function renderToBuffer(
   options?: RenderOptions,
 ): Promise<Uint8Array> {
   const document = buildDocument(spec, options);
-  return pdfRenderToBuffer(document as any);
+  const buffer = await pdfRenderToBuffer(document as any);
+  return new Uint8Array(buffer.buffer, buffer.byteOffset, buffer.byteLength);
 }
 
 /**
@@ -162,7 +163,7 @@ export async function renderToBuffer(
 export async function renderToStream(
   spec: Spec,
   options?: RenderOptions,
-): Promise<ReadableStream> {
+): Promise<NodeJS.ReadableStream> {
   const document = buildDocument(spec, options);
   return pdfRenderToStream(document as any);
 }