Overlay bug when 'Show FPS' is active in some languages

[godbhaal]

Selecting FPS Overlay in some languages (ca, bg, hu, nb) generates a numberless overlay.

For example, using Catalan (ca):

• Selecting only FPS Overlay shows a cropped overlay (just Fotogrames). ​https://ibb.co/86fFDHz

• Selecting more stuff to show (Realtime Overlay or Gametime Overlay,..), enlarges the overlay but the FPS element takes up all the space, pushing out all the other stuff. ​https://ibb.co/3FPqtzt

Maybe the caption is too long (Fotogrames per segon: {number} instead of the usual FPS: {number}) so the number is out-of-box.

As a suggestion, using FPS is also valid for Catalan language, as it is an acronym of Fotogrames Per Segon.

Note the effect is also visible on the main menu.

Related to #5385