Fix UART deinit issues in multiple apps

Also thanks to Willy-JL for finding the issue and fixing part of the apps

esp_flasher_uart.c

@@ -93,12 +93,13 @@ EspFlasherUart* esp_flasher_usart_init(EspFlasherApp* app) {
 void esp_flasher_uart_free(EspFlasherUart* uart) {
     furi_assert(uart);
 
+    furi_hal_serial_async_rx_stop(uart->serial_handle);
+    furi_hal_serial_deinit(uart->serial_handle);
+    furi_hal_serial_control_release(uart->serial_handle);
+
     furi_thread_flags_set(furi_thread_get_id(uart->rx_thread), WorkerEvtStop);
     furi_thread_join(uart->rx_thread);
     furi_thread_free(uart->rx_thread);
 
-    furi_hal_serial_deinit(uart->serial_handle);
-    furi_hal_serial_control_release(uart->serial_handle);
-
     free(uart);
 }