`CodeCompletioString::getName()` was used only as the sorting keys in
`CodeCompletionContext::sortCompletionResults()` which is effectively
deprecated. There's no reason to check them in `swift-ide-test`. Instead,
check `printCodeCompletionResultFilterName()` that is actually used for
filtering.
If there's expected signature after the code completion.
For example:
func <HERE>(arg: Int) {}
This is clearly modifying the function name. We should not perform any
completion including override completion.
rdar://problem/58378950
