[4.4] Fix permission issues on certain ISP (#43473)

* Fix permission issues on certain ISP

* Add comments

---------

Author: bembelimen

administrator/components/com_joomlaupdate/extract.php

@@ -1406,6 +1406,9 @@ private function processTypeFileUncompressed(): bool
         if ($this->dataReadLength == 0) {
             // Before processing file data, ensure permissions are adequate
             $this->setCorrectPermissions($this->fileHeader->file);
+
+            // This file is changed during the script's operation so we clear the status cache.
+            clearstatcache($this->fileHeader->file);
         }
 
         // Open the output file
@@ -1497,6 +1500,9 @@ private function processTypeFileCompressed(): bool
         // Before processing file data, ensure permissions are adequate
         $this->setCorrectPermissions($this->fileHeader->file);
 
+        // This file is changed during the script's operation so we clear the status cache.
+        clearstatcache($this->fileHeader->file);
+
         // Open the output file
         $outfp = @fopen($this->fileHeader->realFile, 'wb');