Unable to submit a tx if balance is low even when it is marked with #[pallet::feeless_if(...)]

[gupnik]

While testing #[pallet::feeless_if(...)] macro: I've discovered that even though the fees are not charged when transaction goes through, I'm not able to submit a transaction if the balance is low (zero):

code: ServerError(1010), message: "Invalid Transaction", data: Some(RawValue("Inability to pay some fees (e.g. account balance too low)"

CC: @ordian

[ordian]

I've noticed that even adding #[pallet::weight((0, Pays::No))] results in the same error, that hints at dropping balance below ED:

the account does not have enough free funds (excluding locked/bonded/reserved) available to cover the transaction fees without dropping the balance below the account existential amount.

[ordian]

cc #6490, #6489