Exclude the wp-compat false positive from the PHPStan config (#186)

Co-authored-by: Claude <noreply@anthropic.com>

Author: swissspidy

phpstan.neon.dist

@@ -18,3 +18,15 @@ parameters:
     switchConditionsMatchingType: true
   ignoreErrors:
     - identifier: missingType.return
+
+    # johnbillion/wp-compat checks every WordPress symbol against the WordPress 4.9
+    # baseline that wp-cli-tests configures, and reports anything newer.
+
+    # WordPress 6.0 only formalized the already documented `...$args` parameter of
+    # `apply_filters()` by adding it to the function signature. Additional arguments were
+    # collected through `func_get_args()` before that, so passing `$package`, `$this` and
+    # `$hook_extra` to `upgrader_pre_download` has always worked. The identifier already
+    # names one specific parameter of one specific function.
+    -
+      identifier: WPCompat.parameterNotAvailable.applyfilters.args
+      path: src/WP_CLI/LanguagePackUpgrader.php