Update French label for Hydrology Interactive Map on Homepage

[marta-baraibar]

Description:
In the ClimWeb for Hydrology version, the interactive map on the homepage currently displays the label:

Dernières alertes météorologiques

• For French-speaking countries and hydrology websites, this wording is not appropriate. Instead, it should display:
• Dernières vigilances inondations

Steps to reproduce:

• Open the Hydrology version of ClimWeb.
• Navigate to the homepage interactive map where warnings are displayed.

Observe the French label.

Expected behavior:

• For hydrology-focused instances, the French label should be “Dernières vigilances inondations”.
• For meteorology-focused instances, the French label can remain “Dernières alertes météorologiques”.