Since Babel issue 621 [0] searching the week number of a date alongside with the year can lead to a wrong year in the result. e.g.: `2023-01-01` gives `W1 2022`

Before the present commit, the tests were surprisingly expecting the wrong result.

An attempt was made [1] to fix the upstream issue but was never merged.

In the meanwhile, Debian reverted the Babel issue 621 [2] in their package.

It means that our test would fail with the patched Debian package like in Ubuntu Noble or Debian Bookworm. On the other hand, if we fix the test to expect the correct value, it would fail on unpatched version of the Babel lib.

So, this commit mitigate the issue by guessing the expected value even if the result is wrong.

[0]: https://github.com/python-babel/babel/pull/621
[1]: https://github.com/python-babel/babel/pull/887
[2]: https://sources.debian.org/patches/python-babel/2.10.3-1/



For reference (from @Xavier-Do )

Pip version and Jammy
```python
In [1]import babel.dates

In [2]: import datetime

In [3]: babel.dates.format_date(datetime.datetime(2023, 1, 1), "EEE w YYYY", "fr_BE")
Out[3]: 'dim. 52 2022'

In [4]: babel.dates.format_date(datetime.datetime(2023, 1, 1), "EEE w YYYY", "en_US")
Out[4]: 'Sun 1 2022'
```

It looks like the week year used is actually not localized, adding a cornercase on Sunday

Noble version

```python
In [1]import babel.dates

In [2]: import datetime

In [3]: babel.dates.format_date(datetime.datetime(2023, 1, 1), "EEE w YYYY", "fr_BE")
Out[3]: 'dim. 52 2022'

In [4]: babel.dates.format_date(datetime.datetime(2023, 1, 1), "EEE w YYYY", "en_US")
Out[4]: 'Sun 1 2023'
```

Small fix on commit 71ab15e4 to remove the `required` attribute on `currency_field` in the form view, which makes it impossible to save the form if the field is not set and editing something unrelated on a monetary field, for ex. the field label or the translations.

The checks in the constraint `_check_currency_field()` added in the same commit should be enough to ensure the `currency_field` is set as needed.

Impacted branches:

`17.0` and `master`

Steps to reproduce:

 1. Go to the Technical menu -> Fields and select a monetary type field
 2. Try to update the Field Label or any field translation

Current behavior:

The editing is blocked by the required 'Currency field'.

Expected behavior:

Allow editing the form view or the related translations.

Description of the issue/feature this PR addresses:

Current behavior before PR:

Desired behavior after PR is merged:




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