Week numbers don't follow locale standard

[PooSham]

Description

According to ISO 8601, the current week number (as of february 25, 2025) should be 9, but igx-calendar with [showWeekNumbers]="true" puts it at 8. This is because there are different standards for week numbers. In Europe, Asia and Oceania, we mostly follow ISO 8601, where the week that contains a Thursday on January 1-4 will be numbered as week 1 (Monday is weekday 1 in this standard). What igniteui seems to follow is called the "Western traditional", where the week that contains a Saturday after January 1 becomes week 1 (Sunday is weekday 1 in this standard).

It would be nice if igniteui could look at the locale, or at least give options, to change the week numbers.

• igniteui-angular version: 19.0.7
• browser: Firefox, Chrome

Steps to reproduce

1. Create the following component: `<igx-calendar [showWeekNumbers]="true" locale="sv-SE" />
2. Look at January 1st 2025, what's the week number?

Result

The week number for january 1st 2025 shows 53

Expected result

The week number for january 1st 2025 should show 1

If it's too hard to create different rules for different locales, having an option would be OK.

More information

Read about different systems here:

https://en.wikipedia.org/wiki/Week#Other_week_numbering_systems