Turbopack dev/build: Ensure @vercel/og is external in Node.js environment (#69691)

While investigating #65614 I found that in Next.js with webpack we mark
this dependency as external but in Turbopack we didn't do that yet,
causing it to be bundled and then fail at runtime because the path
didn't match exactly. This PR ensures it's marked as external.

Didn't add an additional test as we still have some Turbopack build test
failures related to opengraph images so potentially this change also
fixes those 💯

Fixes PACK-3058
Fixes #65614

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Author: timneutkens

crates/next-core/src/next_import_map.rs

@@ -552,17 +552,26 @@ async fn insert_next_server_special_aliases(
     runtime: NextRuntime,
     next_config: Vc<NextConfig>,
 ) -> Result<()> {
-    let external_if_node = move |context_dir: Vc<FileSystemPath>, request: &str| match runtime {
+    let external_cjs_if_node = move |context_dir: Vc<FileSystemPath>, request: &str| match runtime {
         NextRuntime::Edge => request_to_import_mapping(context_dir, request),
-        NextRuntime::NodeJs => external_request_to_import_mapping(request),
+        NextRuntime::NodeJs => external_request_to_cjs_import_mapping(request),
     };
+    let external_esm_if_node = move |context_dir: Vc<FileSystemPath>, request: &str| match runtime {
+        NextRuntime::Edge => request_to_import_mapping(context_dir, request),
+        NextRuntime::NodeJs => external_request_to_esm_import_mapping(request),
+    };
+
+    import_map.insert_exact_alias(
+        "next/dist/compiled/@vercel/og/index.node.js",
+        external_esm_if_node(project_path, "next/dist/compiled/@vercel/og/index.node.js"),
+    );
 
     import_map.insert_exact_alias(
         "@opentelemetry/api",
         // It needs to prefer the local version of @opentelemetry/api
         ImportMapping::Alternatives(vec![
-            external_if_node(project_path, "@opentelemetry/api"),
-            external_if_node(project_path, "next/dist/compiled/@opentelemetry/api"),
+            external_cjs_if_node(project_path, "@opentelemetry/api"),
+            external_cjs_if_node(project_path, "next/dist/compiled/@opentelemetry/api"),
         ])
         .cell(),
     );
@@ -641,7 +650,7 @@ async fn insert_next_server_special_aliases(
 
     import_map.insert_exact_alias(
         "@vercel/og",
-        external_if_node(project_path, "next/dist/server/og/image-response"),
+        external_cjs_if_node(project_path, "next/dist/server/og/image-response"),
     );
 
     Ok(())
@@ -1061,6 +1070,12 @@ fn request_to_import_mapping(context_path: Vc<FileSystemPath>, request: &str) ->
 
 /// Creates a direct import mapping to the result of resolving an external
 /// request.
-fn external_request_to_import_mapping(request: &str) -> Vc<ImportMapping> {
+fn external_request_to_cjs_import_mapping(request: &str) -> Vc<ImportMapping> {
     ImportMapping::External(Some(request.into()), ExternalType::CommonJs).into()
 }
+
+/// Creates a direct import mapping to the result of resolving an external
+/// request.
+fn external_request_to_esm_import_mapping(request: &str) -> Vc<ImportMapping> {
+    ImportMapping::External(Some(request.into()), ExternalType::EcmaScriptModule).into()
+}