* Update GUI_ObjectList.cpp
* fix scaling issue on arrow
* Update GUI_ObjectList.cpp
* Update name column on Linux as well
* Always use column width from `m_columns_width`
* Always use column width from `m_columns_width`
* Remove object list extra horizontal spacing on macOS
* Remove object list header
* Avoid negative width
* Fix compile error
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Co-authored-by: Noisyfox <timemanager.rick@gmail.com>