Fixed copy semantics of objects #7364

Job	Run time
Build LPython to WASM	5m 50s
Build Jupyter Kernel	3m 25s
LPython CI (3.10, ubuntu-latest)	8m 51s
LPython CI (3.10, macos-latest)	8m 38s
Test CPython Interop (@pythoncall)	1m 33s
LPython CI (3.10, windows-2019)	13m 58s
Check Debug build	2m 31s
Run Integration tests with Python 3.9	1m 39s
Run Integration tests with Python 3.10	1m 39s
Check Release build	2m 23s
Run Integration tests with Python 3.11	1m 38s
Run SymPy tests	2m 9s
Test PIP Installable Packages	1m 20s
Run Integration tests with Python 3.12	1m 36s
Upload Tarball	37s
	57m 47s

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