To reproduce the problem:

1. Set a breakpoint on the last line.
2. Delete the last line.

then you get an error like this:

ERROR: Index p_line = 12 is out of bounds (text.size() = 12).
at: get_line_gutter_metadata (scene/gui/text_edit.cpp:6876)

This error appears as long as a breakpoint is removed due to deleting lines and the breakpoint is outside the resulting script.

This is because the breakpoint_toggled signal is emitted for every breakpoint removed when text changes. Therefore, when handling this signal, we should consider cases where the breakpoint is located outside the existing lines.