fix(themes): include PHP tokens in Harbor Night and the reference (#1585)

Harbor Night and the theme reference were missing the --syn-php-variable / --syn-php-function-call tokens added for PHP highlighting, so scripts/theme/theme.test.ts failed on main.

Co-authored-by: shohruh-genius <[email protected]>

plugins/official/harbor-night/themes/harbor-night.scheme.json

@@ -34,6 +34,8 @@
     "--syn-python-predefined-usage": "#c4a0f2",
     "--syn-python-fstring": "#9ccc7a",
     "--syn-python-bytes": "#9ccc7a",
+    "--syn-php-variable": "#b9a3f0",
+    "--syn-php-function-call": "#f2d07a",
     "--syn-builtin": "#6fc3df",
     "--syn-self": "#d6849c",
     "--syn-keyword-arg": "#c4a0f2",