Merge pull request #4908 from vvlladd28/bug/data-keys/add-keys

UI: Fixed bug add data keys in datasource widget

@@ -86,7 +86,6 @@
            [matAutocompleteDisabled]="isEntityCountDatasource"
            [matChipInputFor]="chipList"
            [matChipInputSeparatorKeyCodes]="separatorKeysCodes"
-           matChipInputAddOnBlur
            (matChipInputTokenEnd)="add($event)">
   </mat-chip-list>
   <mat-autocomplete #keyAutocomplete="matAutocomplete"