v3.3: `glfw.GetKeyName()` crashes on unknown key+scancode on Wayland

[vs49688]

As in title.

On my Linux/Wayland machine (NixOS + Apple Silicon), pressing the fn key triggers a panic (scancode 464).
It does not happen on X11.

I hit this first in Supersonic, and found #386, but that's on MacOS.

This is reproducible on current master (da16c12 at time of writing), using glfw 3.3.10.

Reproducer:

package main

import (
	"fmt"
	"runtime"

	"github.com/go-gl/glfw/v3.3/glfw"
)

func init() {
	runtime.LockOSThread()
}

func main() {
	err := glfw.Init()
	if err != nil {
		panic(err)
	}
	defer glfw.Terminate()

	fmt.Printf("GLFW Version: %s\n", glfw.GetVersionString())

	name := glfw.GetKeyName(glfw.KeyUnknown, 464)
	fmt.Println(name)

}

Output:

$ go run -tags wayland ./main.go 
# github.com/go-gl/glfw/v3.3/glfw
In file included from vendor/github.com/go-gl/glfw/v3.3/glfw/c_glfw_lin.go:9:
vendor/github.com/go-gl/glfw/v3.3/glfw/glfw/src/wl_window.c:29:9: warning: ‘_GNU_SOURCE’ redefined
   29 | #define _GNU_SOURCE
      |         ^~~~~~~~~~~
<command-line>: note: this is the location of the previous definition
GLFW Version: 3.3.10 Wayland EGL OSMesa clock_gettime evdev
panic: InvalidValue: Wayland: Invalid scancode 464

goroutine 1 [running, locked to thread]:
github.com/go-gl/glfw/v3.3/glfw.acceptError({0x0, 0x0, 0x40000c01a0?})
        /home/zane/Documents/Coding/glfwcrashtest/vendor/github.com/go-gl/glfw/v3.3/glfw/error.go:177 +0x158
github.com/go-gl/glfw/v3.3/glfw.panicError(...)
        /home/zane/Documents/Coding/glfwcrashtest/vendor/github.com/go-gl/glfw/v3.3/glfw/error.go:188
github.com/go-gl/glfw/v3.3/glfw.GetKeyName(0x5097d8?, 0x400007e020?)
        /home/zane/Documents/Coding/glfwcrashtest/vendor/github.com/go-gl/glfw/v3.3/glfw/input.go:445 +0x3c
main.main()
        /home/zane/Documents/Coding/glfwcrashtest/main.go:23 +0x8c
exit status 2