[REGRESSION]: Playwright.LaunchOptions.SlowMo in .runsettings no longer works in 1.41.0

[flashquartermaster]

Context:

• GOOD Playwright Version: Playwright.NUnit 1.40.0
• BAD Playwright Version: Playwright.NUnit 1.41.0
• Operating System: Winodws, Linux
• Extra:
  NUnit 4.0.1
  NUnit.Analyzers 3.10.0

Code Snippet

Example of .runsettings used

<?xml version="1.0" encoding="utf-8"?>
<RunSettings>
  <TestRunParameters>
    <Parameter name="BaseUrl" value="https://aaa.bbb.com" />
  </TestRunParameters>
  <!-- NUnit adapter -->
  <NUnit>
    <NumberOfTestWorkers>4</NumberOfTestWorkers>
  </NUnit>
  <!-- General run configuration -->
  <RunConfiguration>
    <EnvironmentVariables>
      <PWDEBUG>0</PWDEBUG>
    </EnvironmentVariables>
  </RunConfiguration>
  <!-- Playwright -->
  <Playwright>
    <BrowserName>chromium</BrowserName>
    <ExpectTimeout>5000</ExpectTimeout>
    <LaunchOptions>
      <Headless>false</Headless>
      <SlowMo>500</SlowMo>
      <Channel>chrome</Channel>
    </LaunchOptions>
  </Playwright>
</RunSettings>

Describe the bug
.
After upgrading to 1.41.0 with .net8, SlowMo is no longer applied to the tests whether or not PWDEBUG is set to 1 or 0.

[brutaldev]

Might be related to Issue #2834

[mxschmitt]

Folding into #2794 (comment)