REPL failure code decorator persists on successful code

[cwebster-99]

Tested on WSL and Codespaces and experienced the same issue. Code decorators appear as normal until you get a failure and then all subsequent code has a failure indicator even if successful. When using the Run Previous Command, the keyboard interrupt produces a failure decorator and then causes the similar behavior for subsequent code runs.

Repro:

• Send code to the REPL and observe the code decorators that appear
• Send a line that will result in a failure
• Observe the failure decorator that appears as expected
• Send code that should be successful
• Observe the failure decorator that persists

Repro for run previous command bug:

• Send a few lines of code to the REPL
• Trigger the run previous command
• Run a previous statement
• Observe the failure decorator that persists

Codespaces:

repl_shell_integration_bug.mp4

WSL:

[anthonykim1]

There are two parts to this issue:

1. The wrongly set/cached success/failure decoration
2. KeyboardInterrupt that you are seeing

1. Should be fixed with PR this iteration
2. This is expected behavior (check pwsh run recent history you will see its equivalent 'control c'), but I will look into ways of possibly suppressing this keyboard interrupted error in the middle of a REPL session.