[fix] End of document - go to file browser: swap openFileBrowser() close/open order (#5062)
[fix] End of document - go to file browser: swap openFileBrowser() close/open order (#5062)

Fixes #5060.

Cf. https://github.com/koreader/koreader/blob/89e002f2367079cefd445e1719c1715dccedd65b/frontend/apps/reader/modules/readermenu.lua#L42-L50 and https://github.com/koreader/koreader/blob/89e002f2367079cefd445e1719c1715dccedd65b/frontend/apps/reader/readerui.lua#L711-L718
mwoz123/koreader,NiLuJe/koreader,NiLuJe/koreader,mihailim/koreader,koreader/koreader,Frenzie/koreader,koreader/koreader,Markismus/koreader,poire-z/koreader,pazos/koreader,poire-z/koreader,Frenzie/koreader,Hzj-jie/koreader