refactor(ui): route CheckpointsTable via IdentitySection.checkpointsSlot

ui/src/pages/AppsTab/AppDeploymentPage/index.tsx

@@ -469,9 +469,8 @@ export default function AppDeploymentPage() {
         stagedJar={stagedJar}
         onStagedJarChange={setStagedJar}
         deploying={deploymentInProgress}
-      >
-        {app && (
-          <>
+        checkpointsSlot={
+          app ? (
             <CheckpointsTable
               deployments={deployments}
               versions={versions}
@@ -479,22 +478,23 @@ export default function AppDeploymentPage() {
               jarRetentionCount={jarRetentionCount}
               onSelect={setSelectedCheckpointId}
             />
-            {selectedDep && (
-              <CheckpointDetailDrawer
-                open
-                onClose={() => setSelectedCheckpointId(null)}
-                deployment={selectedDep}
-                version={selectedDepVersion}
-                appSlug={app.slug}
-                envSlug={selectedEnv ?? ''}
-                currentForm={form}
-                onRestore={(deploymentId) => {
-                  handleRestore(deploymentId);
-                  setSelectedCheckpointId(null);
-                }}
-              />
-            )}
-          </>
+          ) : undefined
+        }
+      >
+        {app && selectedDep && (
+          <CheckpointDetailDrawer
+            open
+            onClose={() => setSelectedCheckpointId(null)}
+            deployment={selectedDep}
+            version={selectedDepVersion}
+            appSlug={app.slug}
+            envSlug={selectedEnv ?? ''}
+            currentForm={form}
+            onRestore={(deploymentId) => {
+              handleRestore(deploymentId);
+              setSelectedCheckpointId(null);
+            }}
+          />
         )}
       </IdentitySection>