terminal: CSI S compatiblity improvements

Fixes #9905

This fixes a major compatibility issues with the CSI S sequence:

When our top margin is at the top (row 0) without left/right
margins, we should be creating scrollback. Previously, we were
only deleting.

src/termio/stream_handler.zig

@@ -246,7 +246,7 @@ pub const StreamHandler = struct {
             .insert_lines => self.terminal.insertLines(value),
             .insert_blanks => self.terminal.insertBlanks(value),
             .delete_lines => self.terminal.deleteLines(value),
-            .scroll_up => self.terminal.scrollUp(value),
+            .scroll_up => try self.terminal.scrollUp(value),
             .scroll_down => self.terminal.scrollDown(value),
             .tab_clear_current => self.terminal.tabClear(.current),
             .tab_clear_all => self.terminal.tabClear(.all),