[terminal] IDEA-338879 Ignore additional space at bottom editor setting

GitOrigin-RevId: 8d75b86e2ac41254d8bbfaa00135d1bf0b885689

plugins/terminal/src/org/jetbrains/plugins/terminal/exp/TerminalUiUtils.kt

@@ -59,6 +59,7 @@ object TerminalUiUtils {
       isCaretRowShown = false
       additionalLinesCount = 0
       additionalColumnsCount = 0
+      isAdditionalPageAtBottom = false
       isBlockCursor = true
     }