fix position diagram for sold items (#261)

* fix position diagram for sold items

* Add missing data to position from the past

* Update changelog

Co-authored-by: Valentin Zickner <github@zickner.ch>
Co-authored-by: Thomas <4159106+dtslvr@users.noreply.github.com>

apps/client/src/app/components/position/position-detail-dialog/position-detail-dialog.html

@@ -1,7 +1,7 @@
 <gf-dialog-header
   mat-dialog-title
   [deviceType]="data.deviceType"
-  [title]="data.title"
+  [title]="data.title ?? data.symbol"
   (closeButtonClicked)="onClose()"
 ></gf-dialog-header>