[Wayland] XKB swapescape not recognized (does not change keycode)

[SDLBugzilla]

This bug report was migrated from our old Bugzilla tracker.

Reported in version: HG 2.1
Reported for operating system, platform: Linux, x86_64

Comments on the original bug report:

On 2019-12-06 21:20:14 +0000, Sawyer Bergeron wrote:

When using xkb to swap escape and caps lock on wayland, SDL does not recognize the change occurred and continues to put out non-remapped keycodes

On 2019-12-06 21:26:10 +0000, Sawyer Bergeron wrote:

Initial inspection doesn't turn up any instance of the mapping gotten from xkb_keymap_new_from_string (src/video/wayland/SDL_waylandevents.c: 549) ever being used, but I could be completely mistaken on this

[flibitijibibo]

xkb_keymap_new_from_string is now in the backend, but it doesn't fire the event... see #4142 (comment).