* box select frame & children
* avoid selecting children twice to avoid double their moving
* do not show ele stats if frame and children selected together
* do not update frame membership if selected together
* do not group frame and its children
* comment and refactor code
* hide align altogether
* include frame children when selecting all
* simplify
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Co-authored-by: dwelle <5153846+dwelle@users.noreply.github.com>
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