Date picker doesn't work correctly in French

Summary

When users try to set up a release version, they can't only choose some months. When the month has been shortened using a dot at the end, it doesn't work. In other parts of the product, like for example Due date on JIRA software this problem doesn't exist.

Steps to Reproduce

1. Log into an instance and change default language to French.
2. Change your profile to French.
3. Navigate to Cog icon > Projects > choose project > Versions.
4. Try adding a date. If the month has been abbreviated using a dot (.) at the end, the system will return the error "Please enter the date in the following format: d/MMM/yy"

Expected Results

You can select any date.

Actual Results

If the month has been abbreviated using a dot (.) at the end, the system will return the error "Please enter the date in the following format: d/MMM/yy"

Notes

The abbreviations are currently displayed as follows:
"janv.",
"févr.",
"mars",
"avr.",
"mai",
"juin",
"juil.",
"août",
"sept.",
"oct.",
"nov.",
"déc."

Workaround

Change the profile language to English, you'll be able to enter any date (will be displayed in English).