### Godot version

4.0.beta9

### System information

Linux x86_64

### Issue description

The default Next Script / Previous Script shortcuts insert angle brackets into code when switching scripts.
Presumably this affects all "modifier + printable character" shortcuts.

Workaround for next/prev script: change shortcuts to ctrl-pgup and ctrl-pgdn

### Steps to reproduce

Editor Settings > Shortcuts > ensure that Next Script / Previous Script are set to defaults.
Open any script in the script editor.
Press ctrl-shift-comma or ctrl-shift-period.

### Minimal reproduction project

N/A
switch (p_option) {
		case THEME_IMPORT: {
			file_dialog->set_file_mode(EditorFileDialog::FILE_MODE_OPEN_FILE);
			file_dialog->set_access(EditorFileDialog::ACCESS_FILESYSTEM);
			file_dialog_option = THEME_IMPORT;
			file_dialog->clear_filters();
			file_dialog->add_filter("*.tet");
			file_dialog->popup_file_dialog();
			file_dialog->set_title(TTR("Import Theme"));
		} break;
		case THEME_RELOAD: {
			EditorSettings::get_singleton()->load_text_editor_theme();
		} break;
		case THEME_SAVE: {
			if (EditorSettings::get_singleton()->is_default_text_editor_theme()) {
				ScriptEditor::_show_save_theme_as_dialog();
			} else if (!EditorSettings::get_singleton()->save_text_editor_theme()) {
				EditorNode::get_singleton()->show_warning(TTR("Error while saving theme"), TTR("Error saving"));
			}
		} break;
		case THEME_SAVE_AS: {
			ScriptEditor::_show_save_theme_as_dialog();
		} break;
	}
}
void ScriptEditor::_show_save_theme_as_dialog() {