> In TransactionTablePriv::index, avoid calling
> interfaces::Wallet::tryGetTxStatus if the status is up to date as of the most
> recent NotifyBlockTip notification. Store height from the most recent
> notification in a new ClientModel::cachedNumBlocks variable in order to check
> this.
>
> This avoids floods of IPC traffic from tryGetTxStatus with PR10102 when there
> are a lot of transactions. It might also make the GUI a little more efficient
> even when there is no IPC.
This is a backport of Core PR17905