[junitxml] Add support for record_property fixture for xunit2 junit_family

[harmin-parra]

What's the problem this feature will solve?

When using junit_family=xunit2, I cannot use the record_property fixture to add properties at the testcase level.

I want to generate a JUnit report like this:

<?xml version="1.0" encoding="utf-8"?>
<testsuites name="pytest tests">
  <testsuite name="pytest" errors="0" failures="0" skipped="0" tests="3" time="22.010" timestamp="2026-03-21T11:57:36.596215+00:00" hostname="fac927d2637c">
    <testcase classname="tests.ajax_test" name="test_ajax_verification_with_intercept[firefox]" file="tests/ajax_test.py" line="6" time="8.571"/>
    <testcase classname="tests.ajax_test" name="test_ajax_verification_with_expect[firefox]" file="tests/ajax_test.py" line="56" time="7.441"/>
    <testcase classname="tests.webform_test" name="test_web_form[firefox]" file="tests/webform_test.py" line="8" time="5.973">
      <properties>
        <property name="issues" value="JIRA-123, JIRA-987"/>
        <property name="testrail_attachment" value="screenshots/image.png"/>
        <property name="video" value="videos/f353ea5f-3a1a-4343-9251-166c511de8b1.webm"/>
      </properties>
    </testcase>
  </testsuite>
</testsuites>

Describe the solution you'd like

I want to be able to use the record_property fixture in the same way as with the xunit1 junit_family

def test_sample(record_property):
    record_property("testrail_attachment", "screenshots/image.png")

Alternative Solutions

Use xunit1 instead of xunit2

Additional context

Several tools support/mention the property attribute for testcase
Examples:
https://github.com/testmoapp/junitxml
https://www.checkov.io/8.Outputs/JUnit%20XML.html
https://docs.getxray.app/space/XRAY/301506710/Taking+advantage+of+JUnit+XML+reports