Propagate errors

[MattHalpinParity]

As mentioned in Polkadot-sdk #4939
This change propagates all errors other than NotFound as that is needed to determine if the table file needs to be created or not.
@arkpar @cheme Does this seem reasonable?

[cheme]

works for me.
when looking at the issue I also thought that maybe init_table_data could return an error when needs_free_entrie is true (in this case the file should exists, if it doesn't there was some file loss or an initialization problem).
(needs_free_entry is use with the order table where IIRC there is no lazy table init)

[MattHalpinParity]

works for me. when looking at the issue I also thought that maybe init_table_data could return an error when needs_free_entrie is true (in this case the file should exists, if it doesn't there was some file loss or an initialization problem). (needs_free_entry is use with the order table where IIRC there is no lazy table init)

I think it should skip reading the file if it's missing so avoiding the None issue.