[BUG] E1812 Ikea shortcut button does not fire zha_event

Describe the bug I have an E1812 Ikea shortcut button that uses the quirk, but does not fire zha_event, even though it appears to be using the quirk.

To Reproduce Steps to reproduce the behavior:

1. Pair button with Sonoff ZHA Bridge
2. Listen for zha_event
3. Press button
4. no events occur

Expected behavior to see a zha_event

Screenshots If applicable, add screenshots to help explain your problem.

Device signature - this can be acquired by clicking on the "Zigbee Device Signature" button in the device settings

Paste the device signature here.
{
  "node_descriptor": "NodeDescriptor(logical_type=<LogicalType.EndDevice: 2>, complex_descriptor_available=0, user_descriptor_available=0, reserved=0, aps_flags=0, frequency_band=<FrequencyBand.Freq2400MHz: 8>, mac_capability_flags=<MACCapabilityFlags.AllocateAddress: 128>, manufacturer_code=4476, maximum_buffer_size=82, maximum_incoming_transfer_size=82, server_mask=11264, maximum_outgoing_transfer_size=82, descriptor_capability_field=<DescriptorCapability.NONE: 0>, *allocate_address=True, *is_alternate_pan_coordinator=False, *is_coordinator=False, *is_end_device=True, *is_full_function_device=False, *is_mains_powered=False, *is_receiver_on_when_idle=False, *is_router=False, *is_security_capable=False)",
  "endpoints": {
    "1": {
      "profile_id": 260,
      "device_type": "0x0820",
      "in_clusters": [
        "0x0000",
        "0x0001",
        "0x0003",
        "0x0009",
        "0x0020",
        "0x1000"
      ],
      "out_clusters": [
        "0x0003",
        "0x0004",
        "0x0006",
        "0x0008",
        "0x0019",
        "0x0102",
        "0x1000"
      ]
    }
  },
  "manufacturer": "IKEA of Sweden",
  "model": "TRADFRI SHORTCUT Button",
  "class": "zhaquirks.ikea.shortcutbtn.IkeaTradfriShortcutBtn"

</details>

<details>
<summary>Diagnostic information - this can be acquired by clicking on the "Download Diagnostics" button in the device settings</summary>

There was no diagnostics download button.

</details>

<details>
<summary>Additional logs</summary>

Paste any additional debug logs here.

</details>

**Additional context**
I am a relative newcomer to homeassistant, so apologies if I didn't include something I should have!

Thanks!

[bwims]

Even more useful information! Many thanks!

[dmulcahey]

Support for it is by intend we just added it in the last release for ZHA. Why waste time arguing with the person who wrote the feature 🤦🏻‍♂️Upgrade to the latest release and it will be there.