feat(playwright): add NOW() tests for datetime diff formula

tests/playwright/tests/columnFormula.spec.ts

@@ -66,10 +66,22 @@ const formulaDataByDbType = (context: NcContext) => [
     formula: `DATETIME_DIFF("2022/10/14", "2023/10/14", "y")`,
     result: ['-1', '-1', '-1', '-1', '-1'],
   },
+  {
+    formula: `DATETIME_DIFF(NOW(), "2023/10/14", "y")`,
+    result: ['-1', '-1', '-1', '-1', '-1'],
+  },
+  {
+    formula: `DATETIME_DIFF("2022/10/14", NOW(), "y")`,
+    result: ['0', '0', '0', '0', '0'],
+  },
   {
     formula: `DATETIME_DIFF("2022/10/14", "2023/10/14", "d")`,
     result: ['-365', '-365', '-365', '-365', '-365'],
   },
+  {
+    formula: `DATETIME_DIFF("2022/10/14", NOW(), "d")`,
+    result: ['-90', '-90', '-90', '-90', '-90'],
+  },
   {
     formula: `CONCAT(UPPER({City}), LOWER({City}), TRIM('    trimmed    '))`,
     result: [