Unable to set input_datetime via UI Frontend

[antsca]

Checklist

• I have updated to the latest available Home Assistant version.
• I have cleared the cache of my browser.
• I have tried a different browser to see if it is related to my browser.
• I have tried reproducing the issue in safe mode to rule out problems with unsupported custom resources.

Describe the issue you are experiencing

I have an input_datetime helper with both date and time. When I try to change the date via UI or input_datetime.set_datetime service I get the following error:
Failed to perform the action input_datetime.set_datetime. Could not parse date for dictionary value @ data['date']. Got None

Describe the behavior you expected

Expecting the date changes to the input value

Steps to reproduce the issue

1. Create an input_datetime helper called "test" with (at least) date enabled (has_date: true).
2. Open "Developer tools" and go to "Actions" tab.
3. Switch to YAML Mode and enter the following lines:

action: input_datetime.set_datetime
data:
  date: "2024-01-01"
target:
  entity_id: input_datetime.test

4. Click "Permorm Action" button.

What version of Home Assistant Core has the issue?

2024.12.5

What was the last working version of Home Assistant Core?

No response

In which browser are you experiencing the issue with?

Google Chrome 131.0.6778.205 (64 bit)

Which operating system are you using to run this browser?

Microsoft Windows 11 Home (Version 10.0.22631 build 22631)

State of relevant entities

No response

Problem-relevant frontend configuration

No response

Javascript errors shown in your browser console/inspector

No response

Additional information

No response