imports using symlinked paths are not updated

Describe the Bug

When importing a python module through its symlinked path, changes are not picked up.

To reproduce:

echo 'def hello(name):\n    print(f"Hello {name}")' > test_module.py
ln -s test_module.py sym.py
echo 'from sym import hello\nhello("John")' > test_import.py

Now open both files in your editor with an LSP client and add/remove/rename an argument of hello in test_module.py. When requesting texDocument/hover or diagnostics the the data is not updated. The data is updated correctly if hello is imported with from test_module import hello, so it's an issue specific to symlinks.

Not sure if this is related to #1104 or not.

Sandbox Link

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(Only applicable for extension issues) IDE Information

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