fix date sorting in proof search

src/pages/Proof/Search_GLD/DataGrid.js

@@ -70,9 +70,25 @@ export default function SearchPublicNoticeTable({searchCriteria, applyGridOnRead
             headerName: 'Confirmed/ Return Date',
             flex: 1,
             minWidth: 200,
+            type: 'dateTime',
+
             valueGetter: (params) => {
-                return params?.value ? DateUtils.datetimeStr(params?.value) : "";
-            }
+                const v = params?.value;
+                if (!Array.isArray(v) || v.length < 3) return null;
+
+                const year = v[0];
+                const month = v[1];   // 1-12
+                const day = v[2];
+                const hour = v[3] ?? 0;
+                const minute = v[4] ?? 0;
+                const second = v[5] ?? 0;
+
+                return new Date(year, month - 1, day, hour, minute, second);
+            },
+
+            valueFormatter: (params) => {
+                return params.value ? DateUtils.datetimeStr(params.value) : "";
+            },
         },
         {
             id: 'contactPerson',