fix(chat): remove double padding and zero out nested Scaffold window insets

app/src/main/java/com/m57/hermescontrol/ui/chat/ChatScreen.kt

@@ -322,12 +322,11 @@ fun ChatScreen(
                 )
             }
         },
-    ) { paddingValues ->
+    ) { _ ->
         Column(
             modifier =
                 Modifier
                     .fillMaxSize()
-                    .padding(paddingValues)
                     .background(backgroundGradient)
                     .imePadding(),
         ) {

app/src/main/java/com/m57/hermescontrol/ui/common/HermesScaffold.kt

@@ -2,6 +2,7 @@ package com.m57.hermescontrol.ui.common
 
 import androidx.compose.foundation.layout.Box
 import androidx.compose.foundation.layout.PaddingValues
+import androidx.compose.foundation.layout.WindowInsets
 import androidx.compose.foundation.layout.fillMaxSize
 import androidx.compose.foundation.layout.padding
 import androidx.compose.material.icons.Icons
@@ -50,6 +51,7 @@ fun HermesScaffold(
 
     Scaffold(
         modifier = modifier.nestedScroll(scrollBehavior.nestedScrollConnection),
+        contentWindowInsets = WindowInsets(0, 0, 0, 0),
         snackbarHost = { snackbarHost() },
         topBar = {
             TopAppBar(