Add semantic error test for assignment to literal #7759

Job	Run time
Build Jupyter Kernel	4m 22s
Upload Tarball	55s
Check Debug build	3m 52s
Check Release build	7m 42s
Build LPython to WASM	7m 54s
Test PIP Installable Packages	3m 16s
LPython CI (3.10, windows-2025)	19m 54s
Run Integration tests with Python 3.10	3m 44s
Test LLVM 16	3m 48s
LPython CI (3.10, macos-latest)	11m 48s
Test LLVM 10	3m 55s
LPython CI (3.10, ubuntu-latest)	11m 14s
Run SymPy tests	3m 53s
Run Integration tests with Python 3.9	3m 35s
Test LLVM 15	3m 43s
Run Integration tests with Python 3.11	3m 31s
Test CPython Interop (@pythoncall)	3m 13s
Run Integration tests with Python 3.12	3m 44s
	1h 44m 3s

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