Fix phpcbf conflict on anonymous class bodies in ConsistentIndent

[dereuromark]

Summary

PhpCollective.WhiteSpace.ConsistentIndent and the bundled Generic.WhiteSpace.ScopeIndent disagree on the expected indentation of an anonymous class body when the anonymous class is passed as an argument to a multi-line function call:

return new Service(
    new class ($payload) extends Base {
        public function foo(): void {}
    },
);

The class scope is opened inside an unclosed parenthesis, so the body carries one extra continuation indent level. getExpectedIndent() only counts scope conditions, so it misses that level and dedents the body, while ScopeIndent re-indents it. phpcbf then oscillates between the two until it hits the loop limit and reports FAILED TO FIX (exit 7) — the file becomes unfixable.

Fix

Defer to ScopeIndent for anonymous class bodies — the same way closures, arrays and switch/case blocks are already skipped — via a new isInsideAnonClass() guard.

Before: phpcbf ran the full 50 loops (~75s) and reported FAILED TO FIX (a negative net fix count, the tell-tale sign of two fixers fighting).
After: the file converges in one pass (~8s), no conflict.

Tests

Added a correctly-indented anonymous-class-as-argument case to the ConsistentIndent before/after fixtures. Before this change the fixer wrongly dedented the body (fixer test red); now it is left untouched and no longer flagged.