pll__() not recognized when joining strings

Hi, thanks for a great plugin!

I just found a little inconvenience. When joining strings like this 'foo'.pll__(...), the translated string doesn’t get recognized, only when there’s a space around the dot like this 'foo' . pll__(...).

Here’s a demo with your regex

• without space https://www.phpliveregex.com/p/KOy
• with space https://www.phpliveregex.com/p/KOC

WordPress 6.4.2
Polylang 3.5.3
TTfP 3.4.1

Thank you!