Fix invalid schemas while fetching

packages/server/src/sdk/app/tables/getters.ts

@@ -20,7 +20,13 @@ export async function processTable(table: Table): Promise<Table> {
   if (!table) {
     return table
   }
+
+  table = { ...table }
   if (table._id && isExternalTableID(table._id)) {
+    // Old created external tables via Budibase might have a missing field name breaking some UI such as filters
+    if (table.schema["id"] && !table.schema["id"].name) {
+      table.schema["id"].name = "id"
+    }
     return {
       ...table,
       type: "table",