Disable per-module working directory for coverage compatibility

Signed-off-by: Graham <gpe@openrs2.dev>

.idea/runConfigurations/dev_openrs2.xml

@@ -1,11 +1,13 @@
 <component name="ProjectRunConfigurationManager">
   <configuration default="false" name="dev.openrs2" type="JUnit" factoryName="JUnit">
+    <useClassPathOnly />
     <option name="PACKAGE_NAME" value="dev.openrs2" />
     <option name="MAIN_CLASS_NAME" value="" />
     <option name="METHOD_NAME" value="" />
     <option name="TEST_OBJECT" value="package" />
     <option name="VM_PARAMETERS" value="-ea -Dio.netty.leakDetection.level=PARANOID" />
     <option name="PARAMETERS" value="" />
+    <option name="WORKING_DIRECTORY" value="" />
     <option name="TEST_SEARCH_SCOPE">
       <value defaultName="wholeProject" />
     </option>