Add safe fallback mapping for new Rust category-system values

- As part of the Rust bump, handle newly introduced category-related system
   folder values with a defensive fallback strategy.

NOJIRA

mail-label/data/src/main/kotlin/ch/protonmail/android/maillabel/data/mapper/LabelMapper.kt

@@ -151,6 +151,10 @@ fun MovableSystemFolder.toSystemLabel() = when (this) {
     MovableSystemFolder.TRASH -> SystemLabelId.Trash
     MovableSystemFolder.SPAM -> SystemLabelId.Spam
     MovableSystemFolder.ARCHIVE -> SystemLabelId.Archive
+    else -> {
+        Timber.w("rust-label: mapping from Inbox categories will be supported later. Fallback to Inbox")
+        SystemLabelId.Inbox
+    }
 }
 
 fun InlineCustomLabel.toLabel() = Label(

mail-message/data/src/main/kotlin/ch/protonmail/android/mailmessage/data/mapper/MovableSystemFolderMapper.kt

@@ -19,6 +19,7 @@
 package ch.protonmail.android.mailmessage.data.mapper
 
 import ch.protonmail.android.mailcommon.domain.model.Action
+import timber.log.Timber
 import uniffi.mail_uniffi.MovableSystemFolder
 
 fun MovableSystemFolder.toAction() = when (this) {
@@ -26,4 +27,8 @@ fun MovableSystemFolder.toAction() = when (this) {
     MovableSystemFolder.SPAM -> Action.Spam
     MovableSystemFolder.ARCHIVE -> Action.Archive
     MovableSystemFolder.INBOX -> Action.Inbox
+    else -> {
+        Timber.w("Mapping from Inbox categories will be supported later. Fallback to Inbox")
+        Action.Inbox
+    }
 }