Enable Message Bubble Styling in Message Information (Flutter UI Kit)

Introduce direct styling support for the message bubble displayed in the CometChatMessageInformation component within the Flutter UI Kit. Currently, the message bubble shown in the Message Information view does not respect configurations provided via messageInformationStyle, resulting in inconsistent UI compared to the main message list. Developers are unable to customize properties such as background color, text color, or overall appearance, and the only available workaround is overriding the entire listItemView, which increases complexity and maintenance overhead. Providing a dedicated property such as messageBubbleStyle or a granular customization hook for the message bubble would ensure design consistency, improve developer experience, and maintain the modular integrity of the UI Kit without requiring full component overrides.