[remove] Drop nette/utils set, deprecate withComposerBased(netteUtils:) argument

[TomasVotruba]

Drops the nette/utils set and its single rule, and deprecates the netteUtils: argument of withComposerBased().

UtilsJsonStaticCallNamedArgRector was the only third-party-library rule in rector-src. Symfony, Doctrine and PHPUnit rules all live in their own packages; Nette had an exception with no package behind it. What it delivered:

 use Nette\Utils\Json;

-$encodedJson = Json::encode($data, true);
-$decodedJson = Json::decode($json, true);
+$encodedJson = Json::encode($data, pretty: true);
+$decodedJson = Json::decode($json, forceArrays: true);

Readability only — the positional form still works on nette/utils 4.0, nothing was being repaired. For that, core carried 4 pieces of public API: the rule, SetList::NETTE_UTILS_COMPOSER_BASED, config/set/nette-utils/, and a withComposerBased() argument. It was also registered in the named-args set.

Anyone who still wants it can register the rule directly.

Scope note: only the netteUtils: argument is deprecated. withComposerBased() itself is untouched and keeps working for twig, doctrine, phpunit, symfony, laravel and drupal — 137 rules across the sibling packages implement ComposerPackageConstraintInterface and depend on it.

The argument stays as a no-op with a runtime warning, following the withAttributesSets(symfonyRoute:) precedent:

[WARNING] The "->withComposerBased(netteUtils: true)" argument is deprecated
          and no longer applied. It only added named args to 2 methods of a
          single package, register the rule directly if needed.

Changes:

• removed rules/NetteUtils/ + its tests, config/set/nette-utils/, SetList::NETTE_UTILS_COMPOSER_BASED
• removed the rule from config/set/named-args.php
• added Option::DEPRECATED_COMPOSER_BASED_ARGS + DeprecatedRulesReporter::reportDeprecatedComposerBasedArgs(), wired into ProcessCommand

NetteClassName::JSON stays, it is still used by AddReturnDocblockForJsonArrayRector.