feat(users/flokli/kb): enable mouse support

This switches to a ZMK branch with support for mouse movement, and sets
MIRYOKU_KLUDGE_MOUSEKEYSPR so miryoku makes use of the functionality.

Change-Id: I3d4f48f10d50c202f909bec15189106a1bbcc1b3
Reviewed-on: https://cl.tvl.fyi/c/depot/+/12796
Autosubmit: flokli <flokli@flokli.de>
Reviewed-by: flokli <flokli@flokli.de>
Tested-by: BuildkiteCI

users/flokli/keyboards/west.yml

@@ -28,7 +28,7 @@ manifest:
           - trusted-firmware-m
     - name: zmk
       remote: zmkfirmware
-      revision: 7f1ee320ab638245bbdae9b1cda5d5c50e2cb16e  # main
+      revision: refs/pull/2477/head  # mouse move and scroll support PR
       import: app/west.yml
   self:
     path: config