Log the assembled S3 url if constructing a S3 client fails.

I was configuring an instance and didn't notice that I had pasted a space into the `endpoint` field. It was not obvious from the logs why the URL was invalid.

packages/backend/src/services/drive/s3.ts

@@ -11,6 +11,7 @@ export function getS3(meta: Meta) {
 			  }`
 			: `${meta.objectStorageUseSSL ? "https://" : "http://"}example.net`;
 
+	try {
 		return new S3({
 			endpoint: meta.objectStorageEndpoint || undefined,
 			accessKeyId: meta.objectStorageAccessKey!,
@@ -24,4 +25,7 @@ export function getS3(meta: Meta) {
 				agent: getAgentByUrl(new URL(u), !meta.objectStorageUseProxy),
 			},
 		});
+	} catch (e) {
+		throw new Error(`Failed to construct S3 client, assembled S3 URL: ${u}\n${e}`);
+	}
 }