Use image fields from media entity reference in CKEditor

Added Media entity reference to add image in ckeditor
SS:

Can you add some steps to recreate the issue; i can't work out what set up I need to carry out to test this patch.

Prerequisites:

1. Ensure the Media Library and Media modules are enabled.
2. Create an AI Automator Chain Type with a Media Entity Reference Field as the input field.
3. Enable this AI Automator Chain Type in AI Tools under CKEditor plugin settings.
4. Select the Media Entity Reference Field as the input field in the AI Tools settings.
5. Enable the Media Library plugin in CKEditor.

Test Steps:
Edit a Content Entity:

• Navigate to a content entity with a CKEditor field.
• Open the editor for the CKEditor-enabled field.

Add an Image via Media Library Plugin:

• Click the Media Library button in CKEditor.
• Select an existing image or upload a new image.
• Insert the image into the CKEditor field.

Trigger AI Assistant Plugin:

• Select the inserted image in CKEditor.
• Click on the AI Assistant Plugin that was configured.

Expected Result:

• The AI Assistant Plugin processes the selected image.
• The image is fetched and rendered correctly in the Media Entity Reference Field.

OK, I'm going to have to leave this one: code looks good but I clearly don't know enough about the automator chains to properly set up a test.

Detailed steps:

1. Navigate to /admin/config/ai/automator_chain_types and click on Add Automator Chain Types to create an ai automator chain type.
2. Name the automator chain type: Generate Alt Text from Image.
3. Save the chain type and edit it to add fields.

• Input field: An image field (required) named Input Image.
• Output field: A text field named Image Alt Text.
• Formatted long text field: A field named Output Image with Alt Text to store the generated result.

Configuring the AI Automator for the fields:

1. Enable AI Automator for Image Alt Text
2. Edit Image Alt Text and check Enable AI Automator.
3. Change Automator Input Mode to Advanced Mode (Token).
4. In Automator Prompt (Token), add the following prompt:

Generate an alt text for the input image in less than 5 words. 
Input image: [automator_chain:field_input_image]

5. Check Edit when changed.
6. Set Automator Worker to Direct - Processes and saves the value directly.
7. Select AI Provider as OpenAI.
8. Save the settings.

Enable AI Automator for Output Image with Alt Text

1. Edit Output Image with Alt Text and check Enable AI Automator.
2. Change Automator Input Mode to Advanced Mode (Token).
3. Add the following Automator Prompt (Token):

Generate the output in the below format : <img src="[automator_chain:field_input_image:entity:url]" data-entity-uuid="[automator_chain:field_input_image:entity:uuid]" alt="[automator_chain:field_image_alt_text]">

4. Check Edit when changed.
5. Set Automator Weight to 110 (so it runs after Image Alt Text automator).
6. Select AI Provider as OpenAI.
7. Set Use text format to Basic HTML.
8. Save the settings.

Enabling AI Automator in CKEditor

1. Navigate to /admin/config/content/formats and configure the text format (e.g., Basic HTML).
2. Add AI CKEditor to the Active Toolbar.
3. In CKEditor 5 plugin settings, open the AI Tools section.
4. Open AI Automator CKEditor and enable AI Automators.
5. Enable Generate Alt Text from Image settings and select:
6. Input field: Input Image
7. Text Selection Input: Input Image
8. Require Selection: Checked (ensures selected image is used as input).
9. Write Mode: Replace (generated output replaces selected input).
10. Output field: Output Image with Alt Text

Testing the AI Automator Chain Type

1. Create article content.
2. In the CKEditor field, add an image.
3. Select the image and click on the AI Assistant plugin.
4. Click on Generate Alt Text from Image to open the AI Assistant modal.
5. The selected image appears in the upload field.
6. Click Generate and wait for AI to process the image.
7. Once done, the generated alt text appears in the response field.
8. Click Save changes to editor and verify the image has the new alt text.

It's probably me, but following those instructions I just get the standard image upload field not the image I chose for the final step. I think I will let someone more familiar with the automators test this because I can't confirm the change is working.

Attaching video reference to test the patch.