Fix html derivative grammar consuming php code, fixes #237262

[KapitanOczywisty]

Introduced in cfc2a22

Fixes: #237262, #216409, KapitanOczywisty/language-php#24

cc: @alexr00

[alexr00]

Seems reasonable, thank you for the fix!

[Guillerming]

Hi @alexr00 I am experiencing syntax highlighting errors on my php documents after updating to version 1.100 and I presume it's related to this PR:

Steps to reproduce:

Add this snippet on a blank file

 new Component(
  function() { ?>
    
Failed to syntax highlight this
   }
);

[alexr00]

Thanks @Guillerming, I tried reverting this PR, but still get the same issue. I think it's a bug in the php grammar. I've opened an issue here: KapitanOczywisty/language-php#32