GDScript: Make all warnings enabled in test generation

The test generation doesn't initialize the language (since it's already
initialized in main), but it still needs the warning enabled so it
matches the actual tests.

modules/gdscript/tests/gdscript_test_runner.cpp

@@ -133,13 +133,12 @@ GDScriptTestRunner::GDScriptTestRunner(const String &p_source_dir, bool p_init_l
 
 	if (do_init_languages) {
 		init_language(p_source_dir);
-
-		// Enable all warnings for GDScript, so we can test them.
-		ProjectSettings::get_singleton()->set_setting("debug/gdscript/warnings/enable", true);
-		for (int i = 0; i < (int)GDScriptWarning::WARNING_MAX; i++) {
-			String warning = GDScriptWarning::get_name_from_code((GDScriptWarning::Code)i).to_lower();
-			ProjectSettings::get_singleton()->set_setting("debug/gdscript/warnings/" + warning, true);
-		}
+	}
+	// Enable all warnings for GDScript, so we can test them.
+	ProjectSettings::get_singleton()->set_setting("debug/gdscript/warnings/enable", true);
+	for (int i = 0; i < (int)GDScriptWarning::WARNING_MAX; i++) {
+		String warning = GDScriptWarning::get_name_from_code((GDScriptWarning::Code)i).to_lower();
+		ProjectSettings::get_singleton()->set_setting("debug/gdscript/warnings/" + warning, true);
 	}
 
 	// Enable printing to show results

modules/gdscript/tests/scripts/analyzer/features/auto_inferred_type_dont_error.out

@@ -1,2 +1,6 @@
 GDTEST_OK
+>> WARNING
+>> Line: 6
+>> UNSAFE_METHOD_ACCESS
+>> The method 'free' is not present on the inferred type 'Variant' (but may be present on a subtype).
 Ok