kcms/keyboard: migrate to repeat, not to accent

We aren't shipping the key held module in Plasma 5.21, so migrating
to accent will cause held keys to get eaten, not repeated or show
the accent dialog


(cherry picked from commit 4e80d3ee)

kcms/keyboard/kcminputrc_migrate_repeat_value.py

@@ -7,6 +7,6 @@ for line in sys.stdin:
     if line.startswith("KeyboardRepeating=0"):
         print("KeyRepeat=nothing")
     elif line.startswith("KeyboardRepeating="):
-        print("KeyRepeat=accent")
+        print("KeyRepeat=repeat")
 
 print("# DELETE KeyboardRepeating")