Make text deletion methods public for LineEdit

(cherry picked from commit 2bb44ea5bd57ddaeb7ede96f13736767e4b30342)

scene/gui/line_edit.cpp

@@ -1207,6 +1207,8 @@ void LineEdit::delete_char() {
 
 void LineEdit::delete_text(int p_from_column, int p_to_column) {
 
+	ERR_FAIL_COND_MSG(p_from_column < 0 || p_from_column > p_to_column || p_to_column > text.length(),
+			vformat("Positional parameters (from: %d, to: %d) are inverted or outside the text length (%d).", p_from_column, p_to_column, text.length()));
 	if (text.size() > 0) {
 		Ref<Font> font = get_font("font");
 		if (font != NULL) {
@@ -1791,6 +1793,8 @@ void LineEdit::_bind_methods() {
 	ClassDB::bind_method(D_METHOD("set_max_length", "chars"), &LineEdit::set_max_length);
 	ClassDB::bind_method(D_METHOD("get_max_length"), &LineEdit::get_max_length);
 	ClassDB::bind_method(D_METHOD("append_at_cursor", "text"), &LineEdit::append_at_cursor);
+	ClassDB::bind_method(D_METHOD("delete_char_at_cursor"), &LineEdit::delete_char);
+	ClassDB::bind_method(D_METHOD("delete_text", "from_column", "to_column"), &LineEdit::delete_text);
 	ClassDB::bind_method(D_METHOD("set_editable", "enabled"), &LineEdit::set_editable);
 	ClassDB::bind_method(D_METHOD("is_editable"), &LineEdit::is_editable);
 	ClassDB::bind_method(D_METHOD("set_secret", "enabled"), &LineEdit::set_secret);