fixed objectName children changes when copying items

[yanis60]

When pasting layouts with children to another band, the name of children are changed. i fixed this issue by letting the defined object name instead of renaming it

[fralx]

Hi. Report elements must have unique names. In the case when we use copy/paste, the report element must be given a new name.

[yanis60]

they have a unique name, but if we want to keep a custom name ffor an element this cannot be done without this