ブログにて紹介したNestedScrollの挙動をカスタマイズする際に用いたサンプルコード　https://blondenamazu.hatenablog.com/entry/manage-nested-scroll

NestedScrollSample.kt

package com.example.nestedScrollSample

import androidx.compose.foundation.background
import androidx.compose.foundation.layout.*
import androidx.compose.foundation.lazy.LazyColumn
import androidx.compose.material.Text
import androidx.compose.runtime.Composable
import androidx.compose.ui.Modifier
import androidx.compose.ui.geometry.Offset
import androidx.compose.ui.graphics.Color.Companion.Cyan
import androidx.compose.ui.graphics.Color.Companion.Red
import androidx.compose.ui.graphics.Color.Companion.Yellow
import androidx.compose.ui.input.nestedscroll.NestedScrollConnection
import androidx.compose.ui.input.nestedscroll.NestedScrollSource
import androidx.compose.ui.input.nestedscroll.nestedScroll
import androidx.compose.ui.text.style.TextAlign
import androidx.compose.ui.tooling.preview.Preview
import androidx.compose.ui.unit.dp

@Composable
fun ChildScrolledContent(
    modifier: Modifier = Modifier,
) {
    LazyColumn(
        modifier = modifier
            .nestedScroll(
                connection = object : NestedScrollConnection {
                    override fun onPreScroll(
                        available: Offset,
                        source: NestedScrollSource
                    ): Offset {
                        return available
                    }
                }
            )
            .height(150.dp),
    ) {
        items(10) { index ->
            Column {
                Text(
                    modifier = Modifier.fillMaxWidth(),
                    text = "item $index",
                    textAlign = TextAlign.Center,
                )
                Spacer(modifier = Modifier.height(4.dp))
            }
        }
    }
}

@Composable
fun ParentScrolledContent(
    modifier: Modifier = Modifier
) {
    LazyColumn(
        modifier = modifier
            .width(200.dp)
            .height(350.dp)
    ) {
        item {
            ChildScrolledContent(
                modifier = Modifier
                    .background(color = Yellow)
            )
        }
        item {
            ChildScrolledContent(
                modifier = Modifier
                    .background(color = Red)
            )
        }
        item {
            ChildScrolledContent(
                modifier = Modifier
                    .background(color = Cyan)
            )
        }
    }
}

@Preview
@Composable
fun ParentScrolledContentPreview() {
    ParentScrolledContent()
}