AR-4083: Fix php8.2 warnings

src/cogpowered/FineDiff/Parser/Operations/Copy.php

@@ -23,6 +23,8 @@
  */
 class Copy implements OperationInterface
 {
+    protected $len;
+
     /**
      * Set the initial length.
      *

src/cogpowered/FineDiff/Parser/Operations/Delete.php

@@ -23,6 +23,8 @@
  */
 class Delete implements OperationInterface
 {
+    protected $fromLen;
+
     /**
      * Set the initial length.
      *

src/cogpowered/FineDiff/Parser/Operations/Insert.php

@@ -23,6 +23,8 @@
  */
 class Insert implements OperationInterface
 {
+    protected $text;
+
     /**
      * Sets the text that the operation is working with.
      *

src/cogpowered/FineDiff/Parser/Operations/Replace.php

@@ -20,6 +20,9 @@
 
 class Replace implements OperationInterface
 {
+    protected $fromLen;
+    protected $text;
+
     /**
      * @param int $fromLen
      * @param string $text