feat(web/checklist): Updates write mode validation in assigner node

Includes 'removeFirst' and 'removeLast' operations in the
set of conditions that bypass further validation checks.

Enhances logic to prevent unnecessary validation for
specific write operations.

Signed-off-by: -LAN- <laipz8200@outlook.com>

web/app/components/workflow/nodes/assigner/default.ts

@@ -29,7 +29,7 @@ const nodeDefault: NodeDefault<AssignerNodeType> = {
       if (!errorMessages && !value.variable_selector?.length)
         errorMessages = t(`${i18nPrefix}.fieldRequired`, { field: t('workflow.nodes.assigner.assignedVariable') })
 
-      if (!errorMessages && value.operation !== WriteMode.clear) {
+      if (!errorMessages && value.operation !== WriteMode.clear && value.operation !== WriteMode.removeFirst && value.operation !== WriteMode.removeLast) {
         if (value.operation === WriteMode.set || value.operation === WriteMode.increment
           || value.operation === WriteMode.decrement || value.operation === WriteMode.multiply
           || value.operation === WriteMode.divide) {