When users just installed meters, trying to fetch data from 1 month back would fail

[GuyKh]

System Health details

N/A

Checklist

• I have enabled debug logging for my installation.
• I have filled out the issue template to the best of my ability.
• This issue only contains 1 issue (if you have multiple issues, open one issue for each issue).
• This issue is not a duplicate issue of any previous issues..

Describe the issue

When users just installed meters, trying to fetch data from 1 month back would fail since the data is more recent.

Reproduction steps

1.Install a new smart_meter
2.install the component without a month passing
3.Check for iec: in energy dashboard
...

Debug logs

N/A

Diagnostics dump

No response

[GuyKh]

Per @maorcc report

[GuyKh]

One optional solution would be to have the time to fetch if no recent statistics to be customizable in the config_flow rather than hardcoded 4 weeks (https://github.com/GuyKh/iec-custom-component/blob/main/custom_components/iec/coordinator.py#L355)