Automatically flush cache upon conversion completion

[gamebits]

Is your feature request related to a problem? Please describe.
After NCC has finished its conversion, posts may still appear to be using Classic blocks due to the site cache not yet having been flushed.

Describe the solution you'd like
If the plugin performed wp cache flush upon completion of a conversion, then the results could be seen immediately.

Describe alternatives you've considered
Currently, we run NCC from the WordPress dashboard and then wp cache flush from WP-CLI to complete the process. Less context switching would be preferable!