launcher: route the last raw literals through strings (#791)

finishes what #767 started (thanks @hernan0078). most of that pr landed
already when the launcher panels moved to LauncherView; these six sites were
what was left, and they sit next to siblings that already call Strings.

also pins the delete chip to the wider of Delete/Sure? instead of to Delete.
english happens to have the longer word first, a translation need not.

src/import/RomImporter.lua

@@ -2888,7 +2888,7 @@ end
 -- NX / desktop / Android labels and inbox hints for the FlexLove view.
 function RomImporter:_modsImportButtonLabel()
   if self.isNX then return Strings("Scan again") end
-  return "Import mod .zip"
+  return Strings("Import mod .zip")
 end
 
 function RomImporter:_modsDefaultHint()
@@ -2899,7 +2899,7 @@ function RomImporter:_modsDefaultHint()
     return Strings("Copy a .zip via MTP into %s/imports/mods/\n"
       .. "DBI MTP → 1: SD Card/%simports/mods/", saveDir, rel)
   end
-  if self.android then return "Or copy a mod .zip via USB." end
+  if self.android then return Strings("Or copy a mod .zip via USB.") end
   return Strings("Or drop a mod .zip onto the window.")
 end
 
@@ -2915,7 +2915,7 @@ function RomImporter:_savesDefaultHint(version)
       .. "DBI MTP → 1: SD Card/%s%s/", game, saveDir, inbox, rel, inbox)
   end
   if self.android then
-    return "Import or export a .sav with the system file picker."
+    return Strings("Import or export a .sav with the system file picker.")
   end
   return Strings("Import a .sav to a new slot, or export the active slot.")
 end