Fix ModalBottomSheetPopup parameters (#826)

## Proposed Changes

- Position `ModalBottomSheet` not relative to parent
- Exclude default `Popup`'s insets

Before | After
--- | ---
<img
src="https://github.com/JetBrains/compose-multiplatform-core/assets/1836384/fe7b4b1b-8c12-49d7-9f4c-9c72af6d05cd"
height="600"> | <img
src="https://github.com/JetBrains/compose-multiplatform-core/assets/1836384/176a56ec-9469-4603-b0e8-153fa6c9318a"
height="600">

## Testing

Test: run mpp on iOS or try to use `ModalBottomSheetPopup` on device
with safe-area

## Issues Fixed

Fixes JetBrains/compose-multiplatform#3701,
JetBrains/compose-multiplatform#3703

compose/material3/material3/src/skikoMain/kotlin/androidx/compose/material3/ModalBottomSheet.skiko.kt

@@ -20,18 +20,38 @@ import androidx.compose.foundation.layout.Box
 import androidx.compose.foundation.layout.WindowInsets
 import androidx.compose.foundation.layout.windowInsetsPadding
 import androidx.compose.runtime.Composable
+import androidx.compose.ui.ExperimentalComposeUiApi
 import androidx.compose.ui.Modifier
+import androidx.compose.ui.unit.IntOffset
+import androidx.compose.ui.unit.IntRect
+import androidx.compose.ui.unit.IntSize
+import androidx.compose.ui.unit.LayoutDirection
 import androidx.compose.ui.window.Popup
+import androidx.compose.ui.window.PopupPositionProvider
+import androidx.compose.ui.window.PopupProperties
 
 
+@OptIn(ExperimentalComposeUiApi::class)
 @Composable
 internal actual fun ModalBottomSheetPopup(
     onDismissRequest: () -> Unit,
     windowInsets: WindowInsets,
     content: @Composable () -> Unit,
 ) {
     Popup(
-        onDismissRequest = onDismissRequest
+        popupPositionProvider = object : PopupPositionProvider {
+            override fun calculatePosition(
+                anchorBounds: IntRect,
+                windowSize: IntSize,
+                layoutDirection: LayoutDirection,
+                popupContentSize: IntSize
+            ) = IntOffset.Zero
+        },
+        onDismissRequest = onDismissRequest,
+        properties = PopupProperties(
+            focusable = true,
+            usePlatformInsets = false
+        )
     ) {
         Box(Modifier.windowInsetsPadding(windowInsets)) {
             content()