Starting a message with the word constructor produces garbage message

**Describe the bug**
When a message starting with the word `constructor` is sent, it sends a perl stringified array reference instead of the message.

**To Reproduce**
Steps to reproduce the behavior:
1. Go to any conversation
2. Write `constructor 1` or any message starting with `constructor`
3. Message added to the chat is `ARRAY(0xefa8c23d210)`

**Expected behavior**
The exact message typed should be sent.

**Environment:**
- OS: FreeBSD14
- Browser: Firefox128
- Version: v8.07

Reproduce the issue in any conversation by sending `constructor 1` and compare it with a normal message. Trace the message-handling path for this input; done means the exact text is added to the chat instead of an `ARRAY(...)` string.

Written by the indexing model from the issue text.