NewChatSheet: render filtered contact list inside SectionView card

The "Contacts" header was a SectionView with empty content lambda, and
the actual contact rows were rendered as separate LazyColumn items
OUTSIDE the SectionView — so they sat on canvas without card chrome.

Move filteredContactChats.forEachIndexed { ContactListNavLinkView }
INSIDE the SectionView lambda in both OneHandLazyColumn and
NonOneHandLazyColumn so the contacts read as a single card matching
the iOS-style facelift.

Same trade-off as GroupChatInfoView members fix (fa29bb7a): lazy
rendering of contact rows replaced with eager composition inside a
Column. For typical contact lists (<100) imperceptible; very long
lists may compose slower on open.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

apps/multiplatform/common/src/commonMain/kotlin/chat/simplex/common/views/newchat/NewChatSheet.kt

@@ -325,14 +325,8 @@ private fun ModalData.NewChatSheetLayout(
       item {
         if (filteredContactChats.isNotEmpty() && searchText.value.text.isEmpty()) {
           SectionDividerSpaced(maxTopPadding = false, maxBottomPadding = false)
-          SectionView(stringResource(MR.strings.contact_list_header_title).uppercase(), headerBottomPadding = DEFAULT_PADDING_HALF) {}
+          SectionView(stringResource(MR.strings.contact_list_header_title).uppercase(), headerBottomPadding = DEFAULT_PADDING_HALF) {
-          Spacer(Modifier.height(DEFAULT_PADDING_HALF))
+            filteredContactChats.forEachIndexed { index, chat ->
-        }
-      }
-      item {
-        NoFilteredContactsItem()
-      }
-      itemsIndexed(filteredContactChats) { index, chat ->
               val nextChatSelected = remember(chat.id, filteredContactChats) {
                 derivedStateOf {
                   chatModel.chatId.value != null && filteredContactChats.getOrNull(index + 1)?.id == chatModel.chatId.value
@@ -340,6 +334,12 @@ private fun ModalData.NewChatSheetLayout(
               }
               ContactListNavLinkView(chat, nextChatSelected, showDeletedChatIcon = true)
             }
+          }
+          Spacer(Modifier.height(DEFAULT_PADDING_HALF))
+        } else {
+          NoFilteredContactsItem()
+        }
+      }
       if (appPlatform.isAndroid) {
         item {
           Spacer(Modifier.windowInsetsTopHeight(WindowInsets.statusBars))
@@ -410,13 +410,8 @@ private fun ModalData.NewChatSheetLayout(
       item {
         if (filteredContactChats.isNotEmpty() && searchText.value.text.isEmpty()) {
           SectionDividerSpaced()
-          SectionView(stringResource(MR.strings.contact_list_header_title).uppercase(), headerBottomPadding = DEFAULT_PADDING_HALF) {}
+          SectionView(stringResource(MR.strings.contact_list_header_title).uppercase(), headerBottomPadding = DEFAULT_PADDING_HALF) {
-        }
+            filteredContactChats.forEachIndexed { index, chat ->
-      }
-      item {
-        NoFilteredContactsItem()
-      }
-      itemsIndexed(filteredContactChats) { index, chat ->
               val nextChatSelected = remember(chat.id, filteredContactChats) {
                 derivedStateOf {
                   chatModel.chatId.value != null && filteredContactChats.getOrNull(index + 1)?.id == chatModel.chatId.value
@@ -424,6 +419,11 @@ private fun ModalData.NewChatSheetLayout(
               }
               ContactListNavLinkView(chat, nextChatSelected, showDeletedChatIcon = true)
             }
+          }
+        } else {
+          NoFilteredContactsItem()
+        }
+      }
       if (appPlatform.isAndroid) {
         item {
           Spacer(Modifier.windowInsetsBottomHeight(WindowInsets.navigationBars))