Read "WEB_FIXTURES_BROWSER" from "$_SERVER" consistently

[aik099]

The WEB_FIXTURES_BROWSER was read via getenv() when creating the driver, but via $_SERVER in the testDragDropOntoHiddenItself skip check. Since <server name="WEB_FIXTURES_BROWSER" .../> in phpunit.xml only populates $_SERVER, a locally configured browser was ignored by the driver (it always used firefox), while the skip check saw the configured one.

The CI wasn't affected, because there the value comes from a real env var, which is visible to both.

Now both places use $_SERVER (with firefox default), like all other test config variables do.

Also noted in phpunit.xml.dist, that SELENIUM_VERSION and WEB_FIXTURES_BROWSER must stay commented-out there, because a <server> entry overwrites the env var given by the CI.

Related: minkphp/webdriver-classic-driver#44

🤖 Generated with Claude Code

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 85.42%. Comparing base (d8b1d4e) to head (18c94ae).

Additional details and impacted files

@@            Coverage Diff            @@
##             master     #415   +/-   ##
=========================================
  Coverage     85.42%   85.42%           
  Complexity      184      184           
=========================================
  Files             1        1           
  Lines           501      501           
=========================================
  Hits            428      428           
  Misses           73       73           

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