Translate the clock-setting screens' day names and time-of-day word

DAYS (SUNDAY..SATURDAY), the MORN/DAY/NITE word PrintHour prints, and the
"o'clock"/"min." suffixes bypassed src/core/Strings.lua entirely -- they
were plain Lua literals with no lookup, so a translation mod's `strings`
registry had nothing to catch and Oak's clock screens, the day-of-week
wheel, the main menu clock box and the Pokegear's clock card kept printing
English regardless of the loaded language (reported from a real Spanish
Gold build).

Both live in src/core/gen2/Clock.lua, which already owns weekday/hour
arithmetic and is already required by InitClock.lua, MainMenu.lua and
Pokegear.lua: Clock.DAY_NAMES + Clock.weekdayName(day) is the one place the
three screens read a weekday's name from, so a fix to it cannot land on one
screen and silently miss the other two. Clock.daytimeLabel(hour) is the
translated counterpart to Palettes.clockDaytime, which keeps answering the
untranslated MORN/DAY/NITE key every FORCED_DAYTIME lookup in Palettes.lua
compares against -- src/world/gen2/Palettes.lua itself is untouched, so
that module stays pure table/color math with no Strings coupling.

src/ui/gen2/Pokegear.lua

@@ -56,10 +56,6 @@ local CARDS = {
 -- card over.  One row, so `#self.cards` stays 1 and nothing pages.
 local FLY_MAP_CARD = { id = "map", label = "FLY" }
 
-local DAYS = {
-  "SUNDAY", "MONDAY", "TUESDAY", "WEDNESDAY", "THURSDAY", "FRIDAY", "SATURDAY",
-}
-
 -- ---------------------------------------------------------------- the radio
 --
 -- engine/pokegear/radio.asm is not a text table: it is a jumptable of code.
@@ -1878,7 +1874,7 @@ function Pokegear:drawClock()
   -- Pokegear_UpdateClock: ClearBox(3,5) 5x14, the day at (6,6) and
   -- PrintHoursMins at (6,8) -- two digits, ':', two more, then AM/PM at
   -- column 12.
-  self:text(DAYS[weekday] or "", 6, 6)
+  self:text(Clock.weekdayName(weekday) or "", 6, 6)
   local display = hour % 12
   if display == 0 then display = 12 end
   self:text(Chrome.number(display, 2), 6, 8)
@@ -2203,13 +2199,13 @@ function Pokegear:drawPlain()
   if id == "clock" then
     local hour, minute, weekday = self:clockParts()
     Chrome.box(1, 5, 18, 7)
-    Chrome.print(DAYS[weekday] or "DAY", 3, 7)
+    Chrome.print(Clock.weekdayName(weekday) or "DAY", 3, 7)
     local display = hour % 12
     if display == 0 then display = 12 end
     Chrome.print(("%s:%s %s"):format(
       Chrome.number(display, 2), Chrome.number(minute, 2, true),
       hour < 12 and "AM" or "PM"), 5, 9)
-    Chrome.print(Palettes.clockDaytime(hour), 5, 11)
+    Chrome.print(Clock.daytimeLabel(hour), 5, 11)
   elseif id == "radio" then
     -- Without the gear sheet there is no dial art, so the frequencies go down
     -- the screen as a list.  A frequency whose test failed still gets a row: