CustomTextField with non standard hint not embedded in outline

CustomTextField.kt

/**
 * MIT License
 *
 * Copyright (c) 2022 Andrew Steinmetz
 * 
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 * 
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */
@Composable
fun CustomTextField(
    modifier: Modifier = Modifier,
    text: String,
    hint: String,
    onTextChanged: (String) -> Unit
) {
    Box(
        modifier = modifier.border(BorderStroke(1.dp, Color.Gray), RoundedCornerShape(4.dp))
    ) {
        Column(
            modifier = Modifier
                .fillMaxWidth()
                .padding(start = 8.dp, top = 4.dp, bottom = 4.dp, end = 8.dp)
        ) {
            Text(modifier = Modifier.fillMaxWidth(), text = hint, style = MaterialTheme.typography.caption, color = Color.Gray)
            BasicTextField(
                modifier = Modifier.fillMaxWidth(),
                value = text,
                onValueChange = onTextChanged,
                textStyle = MaterialTheme.typography.subtitle2,
                keyboardOptions = KeyboardOptions(keyboardType = KeyboardType.Number)
            )
        }
    }
}


@Preview
@Composable
fun CustomTextFieldPreview() {
    var text by remember { mutableStateOf("$23.45") }
    Surface {
        Column(modifier = Modifier.padding(16.dp)) {
            CustomTextField(text = text, hint = "You Send", onTextChanged = { text = it })
        }
    }
}

Super simple example of making a custom text field from someone's question on reddit, to be production ready and accessible there is a little bit more work to finish this POC.