Avoid Lint warning

app/src/main/kotlin/com/tutpro/baresip/BaresipService.kt

@@ -1645,8 +1645,7 @@ class BaresipService: Service() {
         val messageUpdate = MutableLiveData<Long>()
         val contactUpdate = MutableLiveData<Long>()
         val registrationUpdate = MutableLiveData<Long>()
-        @SuppressLint("MutableCollectionMutableState")
+        val baresipContacts = mutableStateOf(emptyList<Contact.BaresipContact>())
-        val baresipContacts = mutableStateOf(mutableListOf<Contact.BaresipContact>())
         val androidContacts = mutableStateOf(emptyList<Contact.AndroidContact>())
         val contactNames = mutableStateOf(emptyList<String>())
         var contactsMode = "baresip"

app/src/main/kotlin/com/tutpro/baresip/Contact.kt

@@ -244,7 +244,7 @@ sealed class Contact {
                             Log.e(TAG, "Could not read avatar image from file $id.png: ${e.message}")
                         }
                     }
-                    BaresipService.baresipContacts.value.add(contact)
+                    BaresipService.baresipContacts.value += contact
                 }
             }
             return true
@@ -267,22 +267,26 @@ sealed class Contact {
         }
 
         fun addBaresipContact(contact: BaresipContact) {
-            BaresipService.baresipContacts.value.add(contact)
+            BaresipService.baresipContacts.value += contact
             saveBaresipContacts()
             contactsUpdate()
         }
 
         fun updateBaresipContact(contact: BaresipContact) {
-            val newContact = contact.copy() as BaresipContact
+            val updatedContacts = BaresipService.baresipContacts.value.toMutableList()
-            BaresipService.baresipContacts.value.removeIf { it.id == contact.id }
+            val updatedContact = contact.copy() as BaresipContact
-            newContact.id = System.currentTimeMillis()
+            updatedContact.id = System.currentTimeMillis()
-            BaresipService.baresipContacts.value.add(newContact)
+            updatedContacts.removeIf { it.id == contact.id }
+            updatedContacts.add(updatedContact)
+            BaresipService.baresipContacts.value = updatedContacts
             saveBaresipContacts()
             contactsUpdate()
         }
 
         fun removeBaresipContact(contact: BaresipContact) {
-            BaresipService.baresipContacts.value.removeIf { it.id == contact.id }
+            val removed = BaresipService.baresipContacts.value.toMutableList()
+            removed.removeIf { it.id == contact.id }
+            BaresipService.baresipContacts.value = removed.toList()
             saveBaresipContacts()
             contactsUpdate()
         }

app/src/main/kotlin/com/tutpro/baresip/ContactsActivity.kt

@@ -340,7 +340,6 @@ class ContactsActivity : ComponentActivity() {
                                                                 }
                                                             }
                                                             Contact.removeBaresipContact(contact)
-                                                            //Contact.contactsUpdate()
                                                         }
 
                                                         DialogInterface.BUTTON_NEUTRAL -> {