UserAddressView: move "contacts remain connected" footer out; pad welcome message field; wrap Save in card

Three SimpleX address fixes:
- "Your contacts will remain connected" SectionTextFooter moved out of
  the DeleteAddressButton SectionView (was rendering inside the card).
- Address settings > welcome message field gets 10dp vertical
  contentPadding on its SectionView so the TextEditor doesn't sit flush
  against the card top/bottom.
- Address settings > Save action wrapped in its own SectionView so it
  reads as a single-item card.

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

apps/multiplatform/common/src/commonMain/kotlin/chat/simplex/common/views/usersettings/UserAddressView.kt

@@ -371,8 +371,8 @@ private fun UserAddressLayout(
           SectionDividerSpaced(maxBottomPadding = false)
           SectionView {
             DeleteAddressButton(deleteAddress)
-            SectionTextFooter(stringResource(MR.strings.your_contacts_will_remain_connected))
           }
+          SectionTextFooter(stringResource(MR.strings.your_contacts_will_remain_connected))
         }
       }
     }
@@ -512,13 +512,18 @@ private fun ModalData.UserAddressSettings(
         }
         SectionDividerSpaced()
 
-        SectionView(stringResource(MR.strings.address_welcome_message).uppercase()) {
+        SectionView(
+          stringResource(MR.strings.address_welcome_message).uppercase(),
+          contentPadding = PaddingValues(vertical = DEFAULT_PADDING_HALF),
+        ) {
           AutoReplyEditor(addressSettingsState)
         }
         SectionDividerSpaced(maxTopPadding = true, maxBottomPadding = false)
 
-        saveAddressSettingsButton(addressSettingsState.value == savedAddressSettingsState.value) {
-          saveAddressSettings(addressSettingsState.value, savedAddressSettingsState)
+        SectionView {
+          saveAddressSettingsButton(addressSettingsState.value == savedAddressSettingsState.value) {
+            saveAddressSettings(addressSettingsState.value, savedAddressSettingsState)
+          }
         }
       }
     }