message: fix(sdk-coin-dot): update DOT sweep keepAlive conditional
  The keepAlive conditional was only overriding the value
  if the value was true. We want to ensure it is also
  overriden if false. Update the if condition to check
  if the input is undefined, rather than check if true and exists.
  TICKET:
diff: @@ -84,7 +84,7 @@ export abstract class NativeTransferBuilder extends TransactionBuilder {
  */
  sweep(keepAlive?: boolean): this {
  this._sweepFreeBalance = true;
  - if (keepAlive) {
  + if (keepAlive !== undefined) {
  this._keepAddressAlive = keepAlive;
  }
  return this;
  