Unable to edit Holiday options after selecting excluded Holidays

[oNSXo]

Before you submit a new bug report, please check that

• I have read frequently asked questions and limitations
• I'm running the newest version of Holidays, or the next pre-release.
• I have enabled debug logging for my installation.

Describe the bug

I configured a few holidays (including Washington's Birthday) to be excluded from the list. Now, when I try to reconfigure I get the KeyError and am unable to open that holiday exclusion list in config flow

Configuration

I have no idea why, but when I click "Download Diagnostics" on this device, no file is downloaded and the following error is logged.

2022-12-26 09:07:22.888 ERROR (MainThread) [aiohttp.server] Error handling request
Traceback (most recent call last):
  File "/usr/local/lib/python3.10/site-packages/aiohttp/web_protocol.py", line 435, in _handle_request
    resp = await request_handler(request)
  File "/usr/local/lib/python3.10/site-packages/aiohttp/web_app.py", line 504, in _handle
    resp = await handler(request)
  File "/usr/local/lib/python3.10/site-packages/aiohttp/web_middlewares.py", line 117, in impl
    return await handler(request)
  File "/usr/src/homeassistant/homeassistant/components/http/security_filter.py", line 60, in security_filter_middleware
    return await handler(request)
  File "/usr/src/homeassistant/homeassistant/components/http/forwarded.py", line 100, in forwarded_middleware
    return await handler(request)
  File "/usr/src/homeassistant/homeassistant/components/http/request_context.py", line 28, in request_context_middleware
    return await handler(request)
  File "/usr/src/homeassistant/homeassistant/components/http/ban.py", line 81, in ban_middleware
    return await handler(request)
  File "/usr/src/homeassistant/homeassistant/components/http/auth.py", line 236, in auth_middleware
    return await handler(request)
  File "/usr/src/homeassistant/homeassistant/components/http/view.py", line 136, in handle
    result = await result
  File "/usr/src/homeassistant/homeassistant/components/diagnostics/__init__.py", line 211, in get
    data = await info[d_type.value](hass, config_entry)
  File "/config/custom_components/holidays/diagnostics.py", line 18, in async_get_config_entry_diagnostics
    entity_data = [
  File "/config/custom_components/holidays/diagnostics.py", line 21, in <listcomp>
    if entities[entity].unique_id == entry.data["unique_id"]
KeyError: 'unique_id'

Debug logs

2022-12-26 08:56:25.279 ERROR (MainThread) [aiohttp.server] Error handling request
Traceback (most recent call last):
  File "/usr/local/lib/python3.10/site-packages/aiohttp/web_protocol.py", line 435, in _handle_request
    resp = await request_handler(request)
  File "/usr/local/lib/python3.10/site-packages/aiohttp/web_app.py", line 504, in _handle
    resp = await handler(request)
  File "/usr/local/lib/python3.10/site-packages/aiohttp/web_middlewares.py", line 117, in impl
    return await handler(request)
  File "/usr/src/homeassistant/homeassistant/components/http/security_filter.py", line 60, in security_filter_middleware
    return await handler(request)
  File "/usr/src/homeassistant/homeassistant/components/http/forwarded.py", line 100, in forwarded_middleware
    return await handler(request)
  File "/usr/src/homeassistant/homeassistant/components/http/request_context.py", line 28, in request_context_middleware
    return await handler(request)
  File "/usr/src/homeassistant/homeassistant/components/http/ban.py", line 81, in ban_middleware
    return await handler(request)
  File "/usr/src/homeassistant/homeassistant/components/http/auth.py", line 236, in auth_middleware
    return await handler(request)
  File "/usr/src/homeassistant/homeassistant/components/http/view.py", line 136, in handle
    result = await result
  File "/usr/src/homeassistant/homeassistant/components/config/config_entries.py", line 241, in post
    return await super().post(request, flow_id)
  File "/usr/src/homeassistant/homeassistant/components/http/data_validator.py", line 73, in wrapper
    result = await method(view, request, data, *args, **kwargs)
  File "/usr/src/homeassistant/homeassistant/helpers/data_entry_flow.py", line 110, in post
    result = await self._flow_mgr.async_configure(flow_id, data)
  File "/usr/src/homeassistant/homeassistant/data_entry_flow.py", line 281, in async_configure
    result = await self._async_handle_step(
  File "/usr/src/homeassistant/homeassistant/data_entry_flow.py", line 368, in _async_handle_step
    result: FlowResult = await getattr(flow, method)(user_input)
  File "/usr/src/homeassistant/homeassistant/helpers/schema_config_entry_flow.py", line 390, in _async_step
    result = await self._common_handler.async_step(step_id, user_input)
  File "/usr/src/homeassistant/homeassistant/helpers/schema_config_entry_flow.py", line 129, in async_step
    return await self._async_form_step(step_id, user_input)
  File "/usr/src/homeassistant/homeassistant/helpers/schema_config_entry_flow.py", line 174, in _async_form_step
    return await self._show_next_step_or_create_entry(form_step)
  File "/usr/src/homeassistant/homeassistant/helpers/schema_config_entry_flow.py", line 184, in _show_next_step_or_create_entry
    next_step_id_or_end_flow = await form_step.next_step(self._options)
  File "/config/custom_components/holidays/config_flow.py", line 54, in choose_third_step
    del options[pop]
KeyError: "Washington's Birthday"