ANSI color codes are adding in extra section of report, are not converted in html report

Use case:
I want to add custom section in pytest report and color it by red.

Implementation:
conftest.py:

@pytest.hookimpl(hookwrapper=True)
def pytest_runtest_makereport(item, call):
    outcome = yield
    report = outcome.get_result()
    if (report.when == "call" or report.when == 'teardown') and report.failed:
        config = item.funcargs.get('config')
        if config is not None:
            artifacts_dir = config.get('artifacts_folder', '<ARTIFACTS_DIR>')
        else:
            config = sys.modules.get("config")
            artifacts_dir = getattr(config, 'results_dir', '<ARTIFACTS_DIR>')
        filepath = str(item.fspath).rsplit('tests')[1].lstrip('/')
        test_path = os.path.join(filepath, str(item.name))
        summary = """
Test failed: {test_path}
See artifacts in:
    (ansible run) {artifacts_folder}/{test_path}
        or   {artifacts_folder}/report.html
    (Teamcity run) Artifacts tab --> *.tar.gz/{test_path}
        or   Artifacts tab --> *.tar.gz/report.html
""".format(test_path=test_path, artifacts_folder=artifacts_dir)
        report.longrepr.addsection("Details", summary)

then html report looks like

and ANSI codes were added as is.

Start with the custom report section shown in conftest.py and trace how that section is rendered in report.html. Reproduce the failure with the provided pytest hook and inspect the generated HTML for raw ANSI codes. Done means ANSI-colored custom sections render correctly in the HTML report without exposing escape sequences.