Javascript localization module shows doubled single quotes twice instead of processing them using the translation messages rules

Reproduction steps:

• Import the attached XAR
• Open the imported page

Expected result:

• It should display:

  0 with 'quotes'
  
  10 with 'quotes'
  

Obtained result:

• it displays:

  0 with 'quotes'
  
  10 with ''quotes''
  

— Previous description —
For example, for the like UI for XWIKI-18545, we have the following translation (in french):

like.likers.link.zero={0} J''aime

(the doubled single quote is needed because it's a parametrized message and this is the format for such messages).

When used from velocity, it displays as "0 J'aime" (correctly), when fetched from javascript using the xwiki-l10n API added by XWIKI-18973, it shows "0 J''aime" (incorrectly).