…or (rectorphp#6671)

The Lexer tokenizes at whitespace and certain other characters such as
`.`, and `(`, If none of these tokens are present then the tokens are
not split. For example in the string here:

```
@copyright Some Value. Something.({@link https://example.com}).
```

This is tokenised into:
```
'@copyright'
' '
'Some'
' '
'Value'
'.'
' '
'Something'
.({@link'
' '
'https'
':'
'//example.com}).'
```

Both the open, and close, curly braces may be in the middle of a string
and therefore the `str_contains` must be used for these cases.