Since FlowStepPage can't have a TopAppBar title, make it transparent so the scrolled content isn't cut-off

Author: jmartinesp

libraries/designsystem/src/main/kotlin/io/element/android/libraries/designsystem/atomic/pages/FlowStepPage.kt

@@ -13,9 +13,11 @@ import androidx.compose.foundation.layout.ColumnScope
 import androidx.compose.foundation.layout.fillMaxSize
 import androidx.compose.foundation.layout.padding
 import androidx.compose.material3.ExperimentalMaterial3Api
+import androidx.compose.material3.TopAppBarDefaults
 import androidx.compose.runtime.Composable
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
+import androidx.compose.ui.graphics.Color
 import androidx.compose.ui.unit.dp
 import io.element.android.compound.theme.ElementTheme
 import io.element.android.compound.tokens.generated.CompoundIcons
@@ -63,6 +65,7 @@ fun FlowStepPage(
                     }
                 },
                 title = {},
+                colors = TopAppBarDefaults.topAppBarColors(containerColor = Color.Transparent)
             )
         },
         header = {