Fix: Field with the same name as a lookup in FILTER_EXPRESSION_TOKENS causes crash when filtering with implicit `exact` #136

Job	Run time
Python 3.8 - Django>=3.2,<4.0 - postgresql	51s
Python 3.11 - Django>=4.2,<4.3 - postgresql	49s
Python 3.12 - Django>=5.0,<5.1 - sqlite3	46s
Python 3.10 - git+https://github.com/django/django.git@stable/5.0.x#egg=Django - sqlite3	1m 5s
Python 3.10 - git+https://github.com/django/django.git@main#egg=Django - postgresql	1m 2s
	4m 33s

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