improve error reporting for fatal errors (vercel/turborepo#3550)

This adds the turbo-tasks function name as `context` of all fatal errors
propagated from executing or reading turbo-tasks functions.

That should help in debugging fatal errors.

Author: sokra

crates/next-core/src/next_client_chunks/with_chunks.rs

@@ -105,6 +105,11 @@ impl EcmascriptChunkItem for WithChunksChunkItem {
         self.context
     }
 
+    #[turbo_tasks::function]
+    fn related_path(&self) -> FileSystemPathVc {
+        self.inner.path()
+    }
+
     #[turbo_tasks::function]
     async fn content(&self) -> Result<EcmascriptChunkItemContentVc> {
         let inner = self.inner.await?;

crates/next-core/src/next_client_component/with_client_chunks.rs

@@ -105,6 +105,11 @@ impl EcmascriptChunkItem for WithClientChunksChunkItem {
         self.context
     }
 
+    #[turbo_tasks::function]
+    fn related_path(&self) -> FileSystemPathVc {
+        self.inner.path()
+    }
+
     #[turbo_tasks::function]
     async fn content(&self) -> Result<EcmascriptChunkItemContentVc> {
         let inner = self.inner.await?;