media->file in error message, when image upload fails

resources/langs/nheko_de.ts

resources/langs/nheko_el.ts

resources/langs/nheko_en.ts

resources/langs/nheko_fi.ts

resources/langs/nheko_fr.ts

resources/langs/nheko_nl.ts

resources/langs/nheko_pl.ts

resources/langs/nheko_ru.ts

resources/langs/nheko_zh_CN.ts

src/dialogs/MemberList.cpp

src/dialogs/ReadReceipts.cpp

src/dialogs/RoomSettings.cpp

src/dialogs/UserProfile.cpp