fix: Ensure realm objects are frozen

MailCore/Cache/DraftContentManager.swift

@@ -138,8 +138,8 @@ public class DraftContentManager: ObservableObject {
     }
 
     public func replaceContent(subject: String? = nil, body: String) async {
-        guard let liveDraft = try? getLiveDraft() else { return }
-        guard let parsedMessage = try? await SwiftSoup.parse(liveDraft.body) else { return }
+        guard let draft = try? getFrozenDraft() else { return }
+        guard let parsedMessage = try? await SwiftSoup.parse(draft.body) else { return }
 
         var extractedElements = ""
         for itemToExtract in Draft.appendedHTMLElements {
@@ -149,6 +149,7 @@ public class DraftContentManager: ObservableObject {
         }
 
         let realm = mailboxManager.getRealm()
+        guard let liveDraft = draft.thaw() else { return }
         try? realm.write {
             if let subject {
                 liveDraft.subject = subject
@@ -166,6 +167,10 @@ public class DraftContentManager: ObservableObject {
         return liveDraft
     }
 
+    private func getFrozenDraft() throws -> Draft {
+        return try getLiveDraft().freezeIfNeeded()
+    }
+
     private func writeCompleteDraft(
         completeBody: String,
         signature: Signature,
@@ -313,7 +318,7 @@ public class DraftContentManager: ObservableObject {
 
     private func loadReplyingMessageAndFormat(_ message: Message, replyMode: ReplyMode) async throws -> String {
         let replyingMessage = try await loadReplyingMessage(message, replyMode: replyMode)
-        return await Draft.replyingBody(message: replyingMessage, replyMode: replyMode)
+        return await Draft.replyingBody(message: replyingMessage.freezeIfNeeded(), replyMode: replyMode)
     }
 
     private func loadReplyingAttachments(message: Message, replyMode: ReplyMode) async throws -> [Attachment] {