overlays: Patch hyprland to fix touch keyboards

Fixes both Squeekboard and wvkbd, however the former still has more
issues.

assets/hyprland-fix-keyboard-focus.patch

@@ -0,0 +1,32 @@
+From 9c5dd59d4b1927b7d88e8e3c2e260eb01d95794b Mon Sep 17 00:00:00 2001
+From: Vaxry <vaxry@vaxry.net>
+Date: Sat, 29 Jun 2024 00:23:02 +0200
+Subject: [PATCH] input: fix capabilities enum types passed
+
+hyprland down to the seat protocol impl expects IHID capabilities, not WL_ ones
+
+ref #6702 #6196
+---
+ src/managers/input/InputManager.cpp | 9 +--------
+ 1 file changed, 1 insertion(+), 8 deletions(-)
+
+diff --git a/src/managers/input/InputManager.cpp b/src/managers/input/InputManager.cpp
+index 81a46f97069..b362152053f 100644
+--- a/src/managers/input/InputManager.cpp
++++ b/src/managers/input/InputManager.cpp
+@@ -1473,14 +1473,7 @@ void CInputManager::updateCapabilities() {
+         if (h.expired())
+             continue;
+
+-        auto cap = h->getCapabilities();
+-
+-        if (cap & HID_INPUT_CAPABILITY_KEYBOARD)
+-            caps |= WL_SEAT_CAPABILITY_KEYBOARD;
+-        if (cap & HID_INPUT_CAPABILITY_POINTER)
+-            caps |= WL_SEAT_CAPABILITY_POINTER;
+-        if (cap & HID_INPUT_CAPABILITY_TOUCH)
+-            caps |= WL_SEAT_CAPABILITY_TOUCH;
++        caps |= h->getCapabilities();
+     }
+
+     g_pSeatManager->updateCapabilities(caps);

overlays/hyprland.nix

@@ -0,0 +1,7 @@
+final: prev: {
+  hyprland = prev.hyprland.overrideAttrs (oldAttrs: {
+    patches = (oldAttrs.patches or [ ]) ++ [
+      ../assets/hyprland-fix-keyboard-focus.patch
+    ];
+  });
+}