refactor: improve syntax

Author: mrholek

packages/coreui-react/src/components/form/CFormSelect.tsx

@@ -104,7 +104,7 @@ export const CFormSelect = forwardRef<HTMLSelectElement, CFormSelectProps>(
                     {...(typeof option === 'object' &&
                       option.disabled && { disabled: option.disabled })}
                     {...(typeof option === 'object' &&
-                      option.value !== 'undefined' && { value: option.value })}
+                      option.value !== undefined && { value: option.value })}
                     key={index}
                   >
                     {typeof option === 'string' ? option : option.label}

packages/coreui-react/src/components/table/CTable.tsx

@@ -201,7 +201,7 @@ export const CTable = forwardRef<HTMLTableElement, CTableProps>(
                 <CTableRow {...(item._props && { ...item._props })} key={index}>
                   {columnNames &&
                     columnNames.map((colName: string, index: number) => {
-                      // eslint-disable-next-line unicorn/no-typeof-undefined, unicorn/no-negated-condition
+                      // eslint-disable-next-line unicorn/no-negated-condition
                       return item[colName] !== undefined ? (
                         <CTableDataCell
                           {...(item._cellProps && {