DateTimePicker not in ALLOWED_INPUT_ELEMENTS for InputBlock

[K8sKween]

Problem: DateTimePicker is now allowed inside of InputBlock

Testing:

Code:

InputBlock(label="Select Branch", element=DateTimePicker(action_id="datetimepicker-action",initial_datetime = 1628633820))

Error:

    print(InputBlock(label="Select Branch", element=DateTimePicker(action_id="datetimepicker-action",initial_datetime = 1628633820)))
          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/homebrew/lib/python3.11/site-packages/slackblocks/blocks.py", line 258, in __init__
    raise InvalidUsageError("")
slackblocks.errors.InvalidUsageError

Documentation: LINK
I tested this this in a slack block editor to make sure it works inside a InputBlock

Caveats: This is only available on Desktop and only in Modal or Messages

Possible Resolution: Add DateTimePicker to the constant HERE

[K8sKween]

DateTimePicker may also need a function to validate that inital_datetime is a valid unix timestamp in seconds.