fix(apps): improve tanstack table handling of objects

frontend/src/lib/components/apps/components/display/table/AppCell.svelte

@@ -80,7 +80,11 @@
 	{:else}
 		<!-- svelte-ignore a11y-no-static-element-interactions -->
 		<div on:dblclick={toggleEdit}>
-			{value}
+			{#if typeof value == 'object'}
+				{JSON.stringify(value)}
+			{:else}
+				{value}
+			{/if}
 		</div>
 	{/if}
 </td>

frontend/src/lib/components/apps/components/display/table/AppTableFooter.svelte

@@ -28,8 +28,11 @@
 		for (let i = 0; i < objArray.length; i++) {
 			let line = ''
 			for (let j = 0; j < headers.length; j++) {
-				const value = objArray[i][headers[j]]
+				let value = objArray[i][headers[j]]
 				line += j ? ',' : ''
+				if (typeof value != 'string') {
+					value = JSON.stringify(value)
+				}
 				line += /[\",\n]/.test(value) ? '"' + value.replace(/"/g, '""') + '"' : value
 			}
 			str += line + '\r\n'