Terminal "word" link provider does not support wrapping

Follow up from https://github.com/microsoft/vscode/pull/95072

Repro:

1. Create a wrapped line in the terminal without spaces where it wraps
2. Hover the end word

<img width="416" alt="Screen Shot 2020-04-12 at 6 39 31 PM" src="https://user-images.githubusercontent.com/2193314/79085325-fdc69f00-7cec-11ea-8bfb-e39f0ec44f80.png">
