Little fixes in the World Championship DLC

A retired footballer's birth year was displayed incorrectly (it kept increasing). Fixed.

When a footballer retired, their profile showed their retirement age rather than their current age. However, this was not clear to players. Now, when viewing a retired footballer's profile, it explicitly states that this is their age at retirement, not their current age.

In the previous update, we fixed a bug where footballers could upgrade skills past the maximum allowed level under certain circumstances. However, some players already had these footballers in their campaigns, and if they ended up in the player's squad, the game would fail to save. The game now automatically checks for such footballers in the player's squad, fixes them, and allows the game to save normally.

Minor fixes to the French localization.