[py]: use By class attributes instead of strings

[navin772]

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Motivation and Context

Used By class attributes instead of strings in locator_converter.py

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

Enhancement

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Description

• Replaced string-based locators with By class attributes.

• Improved code readability and maintainability in locator_converter.py.

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Changes walkthrough 📝

	Relevant files
Enhancement	locator_converter.py Refactored locator conversion to use `By` attributes          py/selenium/webdriver/remote/locator_converter.py Imported By class from selenium.webdriver.common.by. Replaced string-based locators with By class attributes. Updated conditional checks to use By constants. +7/-6

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