[py] remove xfail attr for firefox and safari for cookie tests

[Delta456]

User description

Thanks for contributing to Selenium!
A PR well described will help maintainers to quickly review and merge it

Before submitting your PR, please check our contributing guidelines.
Avoid large PRs, help reviewers by making them as simple and short as possible.

Description

Removes @pytest.mark.xfail_safari and @pytest.mark.xfail_firefox attribute for python cookie tests

Motivation and Context

As per the docs and tested locally the attribute is no longer needed and can be tested with Safari and FireFox

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.

---

PR Type

Bug fix, Tests

---

Description

• Removed @pytest.mark.xfail_firefox and @pytest.mark.xfail_safari decorators from cookie tests, allowing them to run on Firefox and Safari without expected failures.
• This change reflects that the sameSite cookie attribute is now supported in these browsers, aligning with local testing results.

---

Changes walkthrough 📝

	Relevant files
Tests	cookie_tests.py Remove xfail markers for Firefox and Safari in cookie tests py/test/selenium/webdriver/common/cookie_tests.py Removed @pytest.mark.xfail_firefox decorator from tests. Removed @pytest.mark.xfail_safari decorator from tests. Tests can now run on Firefox and Safari without expected failures. +0/-7

---

💡 PR-Agent usage: Comment /help "your question" on any pull request to receive relevant information

[qodo-code-review]

PR Reviewer Guide 🔍

Here are some key observations to aid the review process:

⏱️ Estimated effort to review: 1 🔵⚪⚪⚪⚪

🧪 PR contains tests

🔒 No security concerns identified

⚡ Recommended focus areas for review Test Coverage Verify that sameSite cookie functionality works correctly in Firefox and Safari browsers before removing xfail markers

[qodo-code-review]

PR Code Suggestions ✨

No code suggestions found for the PR.

[VietND96]

The common test has been removed from the test matrix for safari since it took 3 hours to complete.
Do you have any idea to optimize it and add it back via

selenium/.github/workflows/ci-python.yml

Line 126 in 4b7d174

- browser: safari

?

[Delta456]

I will try to see what can be done.

[Delta456]

I wasn't able to find a way to optimise this.

A workaround for this can be simply skipping this in the CI like it's done for other tests I believe.

[diemol]

Thank you, @Delta456!