Fix: Custom asset metadata of type object cant be set in asset gridview.

[bk-hitcom]

Custom asset metadata of type object cant be set in asset gridview. State were never set.

Steps to reproduce:

Creating a custom asset meta data of type object and assign it to an image
Switch to grid view of the asset directory
Selecting the created custom metadata of type object for display in the grid
Click on the field and link a data object
In the CellEditor click on save
=> The relation is not adopted

The change is not recognized as a change in the manyToOneRelation class because the variable "this.dataChanged" never changes to "true".

Error was introduced by a change from December 4th, 2023 - commit e422dca in js class "pimcore.element.helpers.gridCellEditor" line 123

Found in Pimcore 11.3.2 with admin-ui-classic-bundle version 1.5.4

[sonarcloud]

Quality Gate failed

Failed conditions
C Reliability Rating on New Code (required ≥ A)
E Maintainability Rating on New Code (required ≥ B)

See analysis details on SonarCloud

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[robertSt7]

@bk-hitcom Thanks for the fix