make select tab more resilient

frontend/src/lib/components/apps/components/inputs/AppSelectTab.svelte

@@ -52,7 +52,7 @@
 
 	function setDefaultValue() {
 		if (resolvedConfig.defaultValue === undefined) {
-			selected = resolvedConfig.items[0].value
+			selected = resolvedConfig.items?.[0]?.value
 		} else if (resolvedConfig.defaultValue) {
 			selected = resolvedConfig.defaultValue
 		}

frontend/src/lib/components/common/table/AppRow.svelte

@@ -142,6 +142,13 @@
 							},
 							type: 'delete',
 							disabled: !canWrite
+						},
+						{
+							displayName: 'View/Edit JSON',
+							icon: faFileExport,
+							action: () => {
+								loadAppJson()
+							}
 						}
 					]
 				}