### Godot version

4.0 beta 10

### System information

Windows 11

### Issue description

On the text editor when using autocomplete on function arguments that receive Input Map names after autocompleting the function name, the string autocompleted appears with an extra " at the end.
This doesnt happen if you write " and then accept the Input name in the dropdown

### Steps to reproduce

- On the script editor
- Start writing `Input.get_vector` but when the dropdown appears with the autocomplete suggestion for `Input.get_vector` press enter to accept it, then press enter again to accept the Input map suggestion
- The autocompleted input name should have an extra "

### Minimal reproduction project

N/A
code_edit->set_highlight_matching_braces_enabled(true);
		CHECK(code_edit->is_highlight_matching_braces_enabled());
		
		Dictionary auto_brace_completion_pairs;
		auto_brace_completion_pairs["["] = "]";
		auto_brace_completion_pairs["'"] = "'";
		auto_brace_completion_pairs[";"] = "'";
		auto_brace_completion_pairs["'''"] = "'''";
		code_edit->set_auto_brace_completion_pairs(auto_brace_completion_pairs);
		CHECK(code_edit->get_auto_brace_completion_pairs().size() == 4);
		CHECK(code_edit->get_auto_brace_completion_pairs()["["] == "]");
		CHECK(code_edit->get_auto_brace_completion_pairs()["'"] == "'");
		CHECK(code_edit->get_auto_brace_completion_pairs()[";"] == "'");
		CHECK(code_edit->get_auto_brace_completion_pairs()["'''"] == "'''");
		ERR_PRINT_OFF;
		
		code_edit->add_auto_brace_completion_pair("[", "]");
		CHECK(code_edit->get_auto_brace_completion_pairs().size() == 4);
		
		code_edit->add_auto_brace_completion_pair("[", "");
		CHECK(code_edit->get_auto_brace_completion_pairs().size() == 4);
		code_edit->add_auto_brace_completion_pair("", "]");
		CHECK(code_edit->get_auto_brace_completion_pairs().size() == 4);
		code_edit->add_auto_brace_completion_pair("", "");
		CHECK(code_edit->get_auto_brace_completion_pairs().size() == 4);
		
		code_edit->add_auto_brace_completion_pair("a", "]");
		CHECK(code_edit->get_auto_brace_completion_pairs().size() == 4);
		code_edit->add_auto_brace_completion_pair("[", "a");
		CHECK(code_edit->get_auto_brace_completion_pairs().size() == 4);