Narrow wingpanel when connecting to external display

### What Happened?

Wingpanel becomes narrower when my laptop is connected to an external dispalay. Wingpanel retains the width even after disconnecting the external display. Adjusting the resolution of the built-in display seems to fix the width of wingpanel.

This issue occurs with both external monitors I have access to. One of them has a lower resolution that the built-in display whereas the other one has the same.

### Steps to Reproduce

1) Connect laptop to external display
-- Wingpanel changes width --
2) Disconnect external display
-- Wingpanel retains width --
3) Change built-in display resolution
-- Wingpanel reverts back to the expected width --

### Expected Behavior

The expected behaviour is that wingpanel should retain its default edge-to-edge width.

### OS Version

8.x (Circe)

### OS Architecture

amd64 (on most hardwares)

### Session Type

Secure Session (Wayland, This is the default)

### Software Version

Latest release (I have run all updates)

### Log Output

```shell

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### Hardware Info