stop sending sync status after first/main sync status is finished

[borngraced]

komodo-defi-framework/mm2src/coins/z_coin/z_rpc.rs

Lines 743 to 753 in 84be059

	loop {
	match wallet_ops_guard_clone.block_height_extrema().await? {
	Some((_, max_in_wallet)) => {
	if max_in_wallet >= current_block {
	break;
	} else {
	self.notify_building_wallet_db(max_in_wallet.into(), current_block.into());
	}
	},
	None => self.notify_building_wallet_db(0, current_block.into()),
	}

SaplingSyncLoopHandle keeps sending sync status after main sync process is finished which results to error like

7 10:57:53, common::log:305] DEBUG z_rpc:679] No one seems interested in SyncStatus: send failed because channel is full

We need to figure out a method to stop sending updates after the main/first synchronization process. One way to achieve this is by introducing a new field called main_sync_state_finished to the SaplingSyncLoopHandle. This field would act as a marker to signal when the main synchronization is completed. Before sending any new updates, we can check the value of main_sync_state_finished to ensure that the main synchronization has indeed finished.

same issue goes for

komodo-defi-framework/mm2src/coins/utxo.rs

Lines 457 to 490 in 84be059

	pub struct UtxoSyncStatusLoopHandle(AsyncSender<UtxoSyncStatus>);
	impl UtxoSyncStatusLoopHandle {
	pub fn new(sync_status_notifier: AsyncSender<UtxoSyncStatus>) -> Self {
	UtxoSyncStatusLoopHandle(sync_status_notifier)
	}
	pub fn notify_blocks_headers_sync_status(&mut self, current_scanned_block: u64, last_block: u64) {
	self.0
	.try_send(UtxoSyncStatus::SyncingBlockHeaders {
	current_scanned_block,
	last_block,
	})
	.debug_log_with_msg("No one seems interested in UtxoSyncStatus");
	}
	pub fn notify_on_temp_error(&mut self, error: impl ToString) {
	self.0
	.try_send(UtxoSyncStatus::TemporaryError(error.to_string()))
	.debug_log_with_msg("No one seems interested in UtxoSyncStatus");
	}
	pub fn notify_on_permanent_error(&mut self, error: impl ToString) {
	self.0
	.try_send(UtxoSyncStatus::PermanentError(error.to_string()))
	.debug_log_with_msg("No one seems interested in UtxoSyncStatus");
	}
	pub fn notify_sync_finished(&mut self, block_number: u64) {
	self.0
	.try_send(UtxoSyncStatus::Finished { block_number })
	.debug_log_with_msg("No one seems interested in UtxoSyncStatus");
	}
	}

cc @shamardy

[shamardy]

Fixed here #2089