`eregDeprecated` sniff picks up method names

Bug Description

The following sniffs pick up method names in addition to function names, causing an error where it shouldn't:

• eregDeprecatedRemoved
• eregiDeprecatedRemoved
• ereg_replaceDeprecatedRemoved
• eregi_replaceDeprecatedRemoved

Given the following reproduction Scenario

The issue happens when running this command:

phpcs -ps file.php --standard=PHPCompatibility --runtime-set testVersion 8.1

... over a file containing this code:

MyClass::eregi($value, $string);

I'd expect the following behaviour

No errors or warnings.

Instead this happened

PHPCompatibility.Extensions.RemovedExtensions.eregDeprecatedRemoved

Environment

Tested Against develop branch?

• I have verified the issue still exists in the develop branch of PHPCompatibility.

Reproduce the report with phpcs -ps file.php --standard=PHPCompatibility --runtime-set testVersion 8.1 using the shown MyClass::eregi($value, $string); code. Start by locating the RemovedExtensions sniffs named in the report and their related tests. Done means static method names no longer trigger these errors while the deprecated functions remain detected.