Fix broken preview of BottomSheet in Android Studio.

libraries/designsystem/src/main/kotlin/io/element/android/libraries/designsystem/components/SimpleModalBottomSheet.kt

@@ -65,7 +65,7 @@ fun SimpleModalBottomSheet(
 
 @PreviewsDayNight
 @Composable
-internal fun SimpleModalBottomSheetPreview() = ElementPreview {
+internal fun SimpleModalBottomSheetPreview() = ElementPreview(fillMaxSize = true) {
     SimpleModalBottomSheet(title = "A title", onDismiss = {}) {
         Text(
             text = LoremIpsum(20).values.first(),

libraries/designsystem/src/main/kotlin/io/element/android/libraries/designsystem/preview/ElementPreview.kt

@@ -10,8 +10,11 @@ package io.element.android.libraries.designsystem.preview
 
 import androidx.annotation.DrawableRes
 import androidx.compose.foundation.isSystemInDarkTheme
+import androidx.compose.foundation.layout.Box
+import androidx.compose.foundation.layout.fillMaxSize
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.CompositionLocalProvider
+import androidx.compose.ui.Modifier
 import androidx.compose.ui.platform.LocalContext
 import androidx.core.content.res.ResourcesCompat
 import coil3.annotation.ExperimentalCoilApi
@@ -29,6 +32,7 @@ import io.element.android.libraries.designsystem.utils.CommonDrawables
 fun ElementPreview(
     theme: Theme = if (isSystemInDarkTheme()) Theme.Dark else Theme.Light,
     showBackground: Boolean = true,
+    fillMaxSize: Boolean = false,
     @DrawableRes
     drawableFallbackForImages: Int = CommonDrawables.sample_background,
     content: @Composable () -> Unit
@@ -42,9 +46,18 @@ fun ElementPreview(
         ElementTheme(theme = theme) {
             if (showBackground) {
                 // If we have a proper contentColor applied we need a Surface instead of a Box
-                Surface(content = content)
+                Surface(
+                    modifier = if (fillMaxSize) Modifier.fillMaxSize() else Modifier,
+                    content = content,
+                )
             } else {
-                content()
+                if (fillMaxSize) {
+                    Box(modifier = Modifier.fillMaxSize()) {
+                        content()
+                    }
+                } else {
+                    content()
+                }
             }
         }
     }