Use correct Nassim fonts for Arabic, Urdu, Pashto

[jamesdonoh]

Testing notes
[Tester to complete with developer when issue is picked up]

Is your feature request related to a problem? Please describe.
Following #2732 we are temporarily going to use NassimPersian for all of APUP.

Once BBC-archive/psammead#735 is done all of the correct Nassim fonts will be available in Psammead, meaning that we can use the correct version of each font for the three remaining Arabic-script services (Arabic, Urdu, Pashto).

respective fonts for each of the services:

  F_NASSIM_ARABIC_REGULAR
  F_NASSIM_ARABIC_BOLD
  F_NASSIM_PASHTO_REGULAR
  F_NASSIM_PASHTO_BOLD
  F_NASSIM_URDU_REGULAR
  F_NASSIM_URDU_BOLD

Describe the solution you'd like

• Similar to how persian does it add the correct nassim fontfaces to each of the service configs for Arabic, Urdu and Pashto
• Add screenshots for before and after and get UX to review
• Check if any changes are required to Storybook in SImorgh

Testing notes

• Check using DevTools that the correct version of the Nassim font is used on each service's articles
• Check that no other styling is adversely impacted (e.g. inline link changes)
• Test how it looks on older/smaller devices
• Dev and test to decide on best way of providing test coverage for correct font being used

Dev insight: Will Cypress tests be required or are unit tests sufficient? Will there be any potential regression? etc

Additional context
Add any other context or screenshots about the feature request here.

[jamesdonoh]

Blocked on BBC-archive/psammead#735 which the Shared Components pod will be picking up following clarification from UX.

[jamesdonoh]

Unblocked following that BBC-archive/psammead#1516

[RayNjeri]

Awaiting BBC-archive/psammead#1592 && BBC-archive/psammead#1595

[jimjohnsonrollings]

Blocking PRs are both merged