[py] Fix code formatting selenium_manager_tests.py

[cgoldberg]

User description

Motivation and Context

This PR fixes a minor code formatting violation in py/test/selenium/webdriver/common/selenium_manager_tests.py that the linting tools were complaining about. All Python linting runs completely clean after this fix.

Tested locally with: tox -e linting -c ./py/tox.ini

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist

• I have read the contributing document.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have added tests to cover my changes.
• All new and existing tests passed.

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PR Type

Bug fix

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Description

• Fixed code formatting in selenium_manager_tests.py.

• Resolved linting issues for cleaner Python code.

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Changes walkthrough 📝

	Relevant files
Bug fix	selenium_manager_tests.py Refactor mock.patch usage for better formatting                    py/test/selenium/webdriver/common/selenium_manager_tests.py Replaced nested mock.patch calls with a cleaner context manager. Improved readability and compliance with linting standards. +4/-3

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