WelcomeMessageView/GroupChatInfoView: unify owner button row, restore member dividers

WelcomeMessageView: drop SectionView wrap on SaveButton so all three
owner-mode action rows (Edit/Preview, Copy, Save) render uniformly as
loose rows on canvas, matching the post-revert direction of the
card-chrome cleanup.

GroupChatInfoView: restore per-item Divider() in the members lazy list
(lost during card-chrome experimentation). Owner row stays attached
to the "N members" card by design; divider appears between owner and
first lazy member, and between each subsequent member.

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

apps/multiplatform/common/src/commonMain/kotlin/chat/simplex/common/views/chat/group/GroupChatInfoView.kt

@@ -728,6 +728,7 @@ fun ModalData.GroupChatInfoLayout(
         }
       }
       items(filteredMembers.value, key = { it.groupMemberId }) { member ->
+        Divider()
         val showMenu = remember(member.groupMemberId) { mutableStateOf(false) }
         val canBeSelected = groupInfo.membership.memberRole >= member.memberRole && member.memberRole < GroupMemberRole.Moderator
         SectionItemViewLongClickable(

apps/multiplatform/common/src/commonMain/kotlin/chat/simplex/common/views/chat/group/WelcomeMessageView.kt

@@ -4,7 +4,6 @@ import SectionBottomSpacer
 import SectionDividerSpaced
 import SectionItemView
 import SectionTextFooter
-import SectionView
 import TextIconSpaced
 import androidx.compose.foundation.layout.*
 import androidx.compose.foundation.text.selection.SelectionContainer
@@ -161,10 +160,8 @@ private fun TextPreview(text: String, linkMode: SimplexLinkMode, markdown: Boole
 
 @Composable
 private fun SaveButton(save: () -> Unit, disabled: Boolean) {
-  SectionView {
-    SectionItemView(save, disabled = disabled) {
-      Text(stringResource(MR.strings.save_and_update_group_profile), color = if (disabled) MaterialTheme.colors.secondary else MaterialTheme.colors.primary)
-    }
+  SectionItemView(save, disabled = disabled) {
+    Text(stringResource(MR.strings.save_and_update_group_profile), color = if (disabled) MaterialTheme.colors.secondary else MaterialTheme.colors.primary)
   }
 }