docs(changelog): describe the dashboard-layout fix v1.33.1 shipped

The v1.33.1 credit block named a reporter for the dashboard layout while
the body of the notes described nothing of the kind. The fix was in the
release; only its description was missing, which leaves a credit pointing
at nothing and a reader unable to tell what changed on their own instance.

CHANGELOG.md

@@ -24,7 +24,7 @@ push as well. That was never what it said it did. If you have been using it as
 a general mute, those channels will start delivering again, and the setting
 does what its name says.
 
-### Two that were reported
+### Three that were reported
 
 Someone self-hosting could not use an OpenAI-compatible gateway. LiteLLM,
 OpenRouter and vLLM all speak the OpenAI wire, but the provider list had no
@@ -39,6 +39,15 @@ date than the page it was downloaded from, for the same reading. Charts also
 drew their week and month boundaries in one fixed timezone, so an evening
 reading landed in the wrong bar for anyone living elsewhere.
 
+Some dashboard tiles could be seen and not switched off. The mobile app draws
+a handful of widgets the web has no render path for, and it writes them into
+the same stored layout, so an account ended up holding rows it never set and
+could not change from anywhere. `bmi` was one of them. They now appear in the
+dashboard settings in their own labelled group, with the same show and hide
+controls as everything else and no reordering, because placement stays the
+mobile app's. The group only shows up for widgets your layout actually holds,
+so an account with no phone client sees nothing new.
+
 ### The backup
 
 Three things it carried and could not restore, or could not carry at all.