Disable option to Start Review when no comment text

• Extension version: 1.79.0
• VSCode Version: 1.33.0
• OS: macOS

Steps to Reproduce:

1. Go to leave a comment on a line
2. Observe that the comment box has the Start Review option enabled by default.

Solution: This option should be disabled until some text is actually entered in the comment box.

Discovered when testing for: https://github.com/Microsoft/vscode/issues/71103

[rebornix]

It sounds like a good feature to me but if you think we’d better avoid that, we can throw an error or show a notification when users try to create a review without comments. This way we don’t need to wait for any vscode side code change, which is already late at this point.

[RMacfarlane]

Yeah, that’s right.

So instead of having the API be additionalAcceptInputCommands: Command[];, it would be

additionalAcceptInputCommands: [{
	command: Command;
	disableWhenEmpty: boolean;
}]