fix: show no provisioners warning (#17835)

<img width="1510" alt="Screenshot 2025-05-14 at 14 53 02"
src="https://github.com/user-attachments/assets/f9c0fbb9-ea39-4fbc-a550-00d9f609a01e"
/>

Fix https://github.com/coder/coder/issues/17421

site/src/pages/CreateTemplatePage/BuildLogsDrawer.stories.tsx

@@ -78,6 +78,10 @@ export const Logs: Story = {
 				...MockTemplateVersion.job,
 				status: "running",
 			},
+			matched_provisioners: {
+				count: 1,
+				available: 1,
+			},
 		},
 	},
 	decorators: [withWebSocket],

site/src/pages/CreateTemplatePage/BuildLogsDrawer.tsx

@@ -29,10 +29,6 @@ export const BuildLogsDrawer: FC<BuildLogsDrawerProps> = ({
 	variablesSectionRef,
 	...drawerProps
 }) => {
-	const matchingProvisioners = templateVersion?.matched_provisioners?.count;
-	const availableProvisioners =
-		templateVersion?.matched_provisioners?.available;
-
 	const logs = useWatchVersionLogs(templateVersion);
 	const logsContainer = useRef<HTMLDivElement>(null);
 
@@ -60,6 +56,10 @@ export const BuildLogsDrawer: FC<BuildLogsDrawerProps> = ({
 		error instanceof JobError &&
 		error.job.error_code === "REQUIRED_TEMPLATE_VARIABLES";
 
+	const matchingProvisioners = templateVersion?.matched_provisioners?.count;
+	const availableProvisioners =
+		templateVersion?.matched_provisioners?.available;
+
 	return (
 		<Drawer anchor="right" {...drawerProps}>
 			<div css={styles.root}>
@@ -85,7 +85,7 @@ export const BuildLogsDrawer: FC<BuildLogsDrawerProps> = ({
 							drawerProps.onClose();
 						}}
 					/>
-				) : logs ? (
+				) : availableProvisioners && availableProvisioners > 0 && logs ? (
 					<section ref={logsContainer} css={styles.logs}>
 						<WorkspaceBuildLogs logs={logs} css={{ border: 0 }} />
 					</section>