Fix init() unable to disable autocommit once enabled

[jnMetaCode]

Summary

ell.init(autocommit=False) doesn't work if autocommit was previously enabled.

Problem

In configurator.py, init() uses:

config.autocommit = autocommit or config.autocommit

The or operator means that once autocommit is True, it can never be set back to False:

• First call: init(autocommit=True) → True or False → True ✓
• Second call: init(autocommit=False) → False or True → True ✗ (expected False)

Fix

Use direct assignment:

config.autocommit = autocommit

This respects the caller's explicit intent. The default value in the function signature (autocommit: bool = True) still provides a sensible default for callers who don't specify it.

Reproduction

import ell

ell.init(autocommit=True)
print(ell.config.autocommit)  # True

ell.init(autocommit=False)
print(ell.config.autocommit)  # True (bug!) — should be False