fix version metadata binding type in when generating env type (#8990)

* fix type of version metadata binding

* changeset

Author: emily-shen

.changeset/plenty-beans-enjoy.md

@@ -0,0 +1,5 @@
+---
+"wrangler": patch
+---
+
+fix: When generating Env types, set type of version metadata binding to `WorkerVersionMetadata`. This means it now correctly includes the `timestamp` field.

packages/wrangler/src/__tests__/type-generation.test.ts

@@ -443,7 +443,7 @@ describe("generate types", () => {
 					BROWSER_BINDING: Fetcher;
 					AI_BINDING: Ai;
 					IMAGES_BINDING: ImagesBinding;
-					VERSION_METADATA_BINDING: { id: string; tag: string };
+					VERSION_METADATA_BINDING: WorkerVersionMetadata;
 					ASSETS_BINDING: Fetcher;
 					PIPELINE: import(\\"cloudflare:pipelines\\").Pipeline<import(\\"cloudflare:pipelines\\").PipelineRecord>;
 				}
@@ -533,7 +533,7 @@ describe("generate types", () => {
 					BROWSER_BINDING: Fetcher;
 					AI_BINDING: Ai;
 					IMAGES_BINDING: ImagesBinding;
-					VERSION_METADATA_BINDING: { id: string; tag: string };
+					VERSION_METADATA_BINDING: WorkerVersionMetadata;
 					ASSETS_BINDING: Fetcher;
 					PIPELINE: import(\\"cloudflare:pipelines\\").Pipeline<import(\\"cloudflare:pipelines\\").PipelineRecord>;
 				}

packages/wrangler/src/type-generation/index.ts

@@ -505,7 +505,7 @@ export async function generateEnvTypes(
 	if (configToDTS.version_metadata) {
 		envTypeStructure.push([
 			configToDTS.version_metadata.binding,
-			"{ id: string; tag: string }",
+			"WorkerVersionMetadata",
 		]);
 	}