Several backend related error messages when running on `etna`

[BrunoLiegiBastonLiegi]

When running on etna I get a chain of error messages the first time I ask for the frequencies, samples, ecc.... Namely, given the execution result result, asking for instance for the frequencies results in:

result.frequencies()
[Qibo 0.2.12|ERROR|2024-10-14 12:28:39]: The 'qibojit' backends' provider is not available. Check that a Python package named 'qibojit' is installed, and it is exposing valid Qibo backends.
[2024-10-14 12:28:39,557] ERROR: The 'qibojit' backends' provider is not available. Check that a Python package named 'qibojit' is installed, and it is exposing valid Qibo backends.
[Qibo 0.2.12|ERROR|2024-10-14 12:28:39]: The 'qibojit' backends' provider is not available. Check that a Python package named 'qibojit' is installed, and it is exposing valid Qibo backends.
[2024-10-14 12:28:39,558] ERROR: The 'qibojit' backends' provider is not available. Check that a Python package named 'qibojit' is installed, and it is exposing valid Qibo backends.
WARNING: All log messages before absl::InitializeLog() is called are written to STDERR
I0000 00:00:1728901720.986336   43209 cuda_executor.cc:1015] successful NUMA node read from SysFS had negative value (-1), but there must be at least one NUMA node, so returning NUMA node zero. See more at https://github.com/torvalds/linux/blob/v6.0/Documentation/ABI/testing/sysfs-bus-pci#L344-L355
[Qibo 0.2.12|INFO|2024-10-14 12:28:41]: Using tensorflow backend on /device:CPU:0
[2024-10-14 12:28:41,022] INFO: Using tensorflow backend on /device:CPU:0
Out[2]: Counter({'00': 976, '01': 24})

By the way, the shots are completely off, as the expected result is Counter({'10': 1000}) since I am sending two GPI2(0) (i.e. an X), but this might be a problem in the calibration I guess.

[scarrazza]

Concerning error message, this should be fixed after releasing qibo 0.2.13, given that https://github.com/qiboteam/qibo/pull/1486 was merged.

[alecandido]

https://github.com/qiboteam/qibo/pull/1505