Added blocklyImageField CSS class to image fields

[vexora-0]

Issue -> #8314

fixes #8314

Description :

This pull request introduces a change to the FieldImage class in Blockly to enhance the styling capabilities of image fields. By adding the blocklyImageField CSS class to the fieldGroup_ element, developers can now apply custom styles more easily to image fields within Blockly.

Changes Made :

• Modified the initView method in core/field_image.ts to call dom.addClass with this.fieldGroup_ and 'blocklyImageField'.

Details:

The initView method has been updated to ensure that the blocklyImageField CSS class is applied to the fieldGroup_ element whenever an image field is initialized. This addition enhances the flexibility for developers to customize the appearance of image fields using CSS.

Branch :

• This change has been made against the rc/v12.0.0 branch.

By adding the blocklyImageField class, developers can now easily apply CSS styles specific to image fields, enhancing the visual customization options available in Blockly.

[vexora-0]

hey @BeksOmega I have got all requirements please check my pr

[BeksOmega]

This looks great! Thank you for the fix =) Once CI passses I"ll get this merged!

[Edit: oh nevermind, CI has already passed! Thank you again!]