Missing highlight for IMAGETYPE_WEBP

[kras95]

Description of the Issue

IMAGETYPE_WEBP from the Imagetype Constants is not highlighted

Steps to Reproduce the Issue

1. Open notepad++
2. Switch programming language to PHP
3. Open a <?php tag
4. Type IMAGETYPE_WEBP inside the <?php tag

Expected Behavior

IMAGETYPE_WEBP should be highlighted in green like the other Imagetype Constants

Actual Behavior

IMAGETYPE_WEBP is not highlighted

Debug Information

Notepad++ v7.9 (32-bit)
Build time : Sep 22 2020 - 03:24:22
Path : D:\Programs\Notepad++\notepad++.exe
Admin mode : OFF
Local Conf mode : OFF
OS Name : Windows 10 Enterprise (64-bit)
OS Version : 1909
OS Build : 18363.1139
Current ANSI codepage : 1252
Plugins : mimeTools.dll NppConverter.dll NppExport.dll

[ArkadiuszMichalski]

To get all constans just run (without searching in documentation):

<?php
print_r(get_defined_constants());
?>

or split into categories:

<?php
print_r(get_defined_constants(true));
?>

I've seen a bug with missing other constant #6097. I will just add that I get something around 2300 constants in my test environment. This IMAGETYPE_WEBP belongs to the standard category.
https://www.php.net/manual/en/function.exif-imagetype.php