Workaround JLine bug for mid-line tab completion

Before:
```
scala> {" ".char<TAB>}
charAt   chars

scala> {" ".char<CURSOR>}}
```

I noticed that pressing <SPACE>-<BACKSPACE> re-rendered the line
correctly, so I've added this workaround to our customization of
the JLine console reader.

After:

```
scala> {" ".char<TAB>}
charAt   chars

scala> {" ".char<CURSOR>}
```

We can delete this workaround when JLine 2.13.1 is released, but
I haven't heard back about when this might happen.

0 files changed, 0 insertions, 0 deletions