Add a Prop to Customize Only the TextInput Background Color in MessageComposerConfiguration

Currently, modifying the textInput background color in MessageComposerConfiguration also affects the background color of the send button. There is no dedicated prop to change only the background color of the text input field above the divider line.
Request a new prop (e.g., textInputBackgroundColor) that allows customization of the text input’s background without impacting other elements like the send button. This will provide greater flexibility in UI customization.