Use a nonce to verify shell integration command lines

[Tyriar]

This is a follow up to improve the UX of rerunning and trusting a command line from shell integration scripts #179701

[Tyriar]

To verify repeat these steps for each shell type (bash, zsh, fish, pwsh):

1. Open a terminal and ensure shell integration is activated
2. Run the toggle escape sequence logging command
3. Run a command in the terminal, verify you see a line with a guid in the escape sequence log like this:
   
4. Click the shell integration decoration and select rerun command, verify that it reruns the command immediately, without a confirmation prompt
   
5. For bash only run echo -e '\x1b]633;E;fake', verify that you get a confirmation prompt