Fix small mistakes in compare text logic

Existing text should be compared with expected text (and not original text)

Review ID: IDEA-CR-40066

platform/lang-impl/src/com/intellij/internal/retype/RetypeSession.kt

@@ -196,7 +196,7 @@ class RetypeSession(
     while (i < text.length && j < expectedText.length) {
       while (i < text.lastIndex && isSkipped(text[i])) i++
       while (j < expectedText.lastIndex && isSkipped(expectedText[j])) j++
-      if (text[i] != originalText[j]) return false
+      if (text[i] != expectedText[j]) return false
       i++
       j++
     }