build: Add phan

[Abijeet]

This PR adds the following commits:

• Update to use mediawiki-codesniffer v48.0.0
• Enable and configure Phan
• Add yaml-sort-checker to dev dependencies

Minimum PHP version has been updated to v8.1
Had to drop support for PHP 8.5 to fix CI errors:

 /home/runner/work/language-data/language-data/vendor/phan/phan/src/Phan/CodeBase.php:590 [8192] Method SplObjectStorage::attach() is deprecated since 8.5, use method SplObjectStorage::offsetSet() instead
(Phan 5.5.1 crashed)
More details:
#2: Phan\CodeBase->addInternalFunctionsByNames() called at [/home/runner/work/language-data/language-data/vendor/phan/phan/src/Phan/CodeBase.php:243] Args: [["clone", "exit", "die", "zend_version", "func_num_args", "func_get_arg", "func_get_args", "strlen", "strcmp", "strncmp", ... 2328 more element(s)]]
#3: Phan\CodeBase->__construct() called at [/home/runner/work/language-data/language-data/vendor/phan/phan/src/codebase.php:16] Args: [["InternalIterator", "Exception", "ErrorException", "Error", "CompileError", "ParseError", "TypeError", "ArgumentCountError", "ValueError", "ArithmeticError", ... 429 more element(s)], ["Traversable", "IteratorAggregate", "Iterator", "Serializable", "ArrayAccess", "Countable", "Stringable", "Throwable", "UnitEnum", "BackedEnum", ... 64 more element(s)], ["Phan\\PluginV3\\IssueEmitter"], ["true", "false", "null", "E_ERROR", "E_WARNING", "E_PARSE", "E_NOTICE", "E_CORE_ERROR", "E_CORE_WARNING", "E_COMPILE_ERROR", ... 3569 more element(s)], ["clone", "exit", "die", "zend_version", "func_num_args", "func_get_arg", "func_get_args", "strlen", "strcmp", "strncmp", ... 2328 more element(s)]]

See: https://github.com/wikimedia/language-data/actions/runs/19819690893/job/56779101738?pr=465

Bug: https://phabricator.wikimedia.org/T410000

[Abijeet]

Please Rebase and merge this PR into the main branch.

[jdforrester]

You shouldn't merge this until Phan 6.x which is PHP 8.5 compatible, as you have found.

[reedy]

May be a sign that this script doesn't actually want to be in src/

[jdforrester]

As I said, please back out the Phan changes until 8.5 is working, rather than regress the state.

[Abijeet]

You shouldn't merge this until Phan 6.x which is PHP 8.5 compatible, as you have found.

I'd prefer to include Phan now and remove PHP 8.5 compatibility to keep it inline with WMF usage. We can update to Phan 6.x and PHP 8.5 when upstream work is done.

[jdforrester]

You shouldn't merge this until Phan 6.x which is PHP 8.5 compatible, as you have found.

I'd prefer to include Phan now and remove PHP 8.5 compatibility to keep it inline with WMF usage. We can update to Phan 6.x and PHP 8.5 when upstream work is done.

Wikimedia CI will enforce PHP 8.5 soon. So this repo now won't be able to be a library in vendor until Phan 6 is released.

[Abijeet]

I submitted: #473 for the non-phan related changes.

[jdforrester]

I submitted: #473 for the non-phan related changes.

Thanks! I've now rebased this down to just the phan installation.

[jdforrester]

This is fine, but shouldn't be landed until the upstream fixes are released (and the 8.5 removal is dropped). We aren't allowing new non-PHP 8.5 libraries into mediawiki/vendor.git.