Fix page index type safety in PromptEditorDlg

Changed the page index variable from `int` to `size_t` to match the return type of `GetPageCount()`. This eliminates the unnecessary `>= 0` check, as `size_t` is unsigned and cannot hold negative values. The change improves type safety and prevents potential issues with signed/unsigned comparison.

* Plugin/CustomControls/PromptEditorDlg.cpp

**Generated by CodeLite**

Signed-off-by: Eran Ifrah <eran@codelite.org>

Author: eranif

Plugin/CustomControls/PromptEditorDlg.cpp

@@ -119,8 +119,8 @@ void PromptEditorDlg::SelectLabel(const wxString& label)
         if (item_label != label) {
             continue;
         }
-        int page = static_cast<int>(m_dvListCtrlPrompts->GetItemData(m_dvListCtrlPrompts->RowToItem(i)));
-        if (page >= 0 && page < m_simpleBook->GetPageCount()) {
+        size_t page = static_cast<size_t>(m_dvListCtrlPrompts->GetItemData(m_dvListCtrlPrompts->RowToItem(i)));
+        if (page < m_simpleBook->GetPageCount()) {
             m_simpleBook->SetSelection(page);
             m_dvListCtrlPrompts->SelectRow(i);
         }