fix(servicenow): address greptile review feedback for offset and displayValue

Author: waleedlatif1

apps/sim/blocks/blocks/servicenow.ts

@@ -143,10 +143,12 @@ Output: {"short_description": "Network outage", "description": "Network connecti
       title: 'Display Value',
       type: 'dropdown',
       options: [
+        { label: 'Default (not set)', id: '' },
         { label: 'False (sys_id only)', id: 'false' },
         { label: 'True (display value only)', id: 'true' },
         { label: 'All (both)', id: 'all' },
       ],
+      value: () => '',
       condition: { field: 'operation', value: 'servicenow_read_record' },
       description: 'Return display values for reference fields instead of sys_ids',
       mode: 'advanced',

apps/sim/tools/servicenow/read_record.ts

@@ -109,7 +109,7 @@ export const readRecordTool: ToolConfig<ServiceNowReadParams, ServiceNowReadResp
         queryParams.append('sysparm_limit', params.limit.toString())
       }
 
-      if (params.offset !== undefined) {
+      if (params.offset) {
         queryParams.append('sysparm_offset', params.offset.toString())
       }