fix: prefer global.codecept_dir over store._codeceptDir in getter

When unit tests set global.codecept_dir directly (without calling
store.initialize()), the getter must pick up the global value even
if _codeceptDir was set by a prior test in the same process.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: DavertMik

lib/store.js

@@ -11,14 +11,14 @@ const store = {
   _outputDir: null,
 
   get codeceptDir() {
-    return this._codeceptDir || global.codecept_dir || null
+    return global.codecept_dir || this._codeceptDir || null
   },
   set codeceptDir(val) {
     this._codeceptDir = val
   },
 
   get outputDir() {
-    return this._outputDir || global.output_dir || null
+    return global.output_dir || this._outputDir || null
   },
   set outputDir(val) {
     this._outputDir = val