Faster TypeCombinator

[staabm]

the reproducer from phpstan/phpstan#14869 with n=300

before this PR

➜  phpstan-src git:(2.2.x) ✗ hyperfine 'php bin/phpstan analyze repro.php --debug' --runs=5
Benchmark 1: php bin/phpstan analyze repro.php --debug
  Time (mean ± σ):      8.525 s ±  0.066 s    [User: 7.835 s, System: 0.271 s]
  Range (min … max):    8.449 s …  8.630 s    5 runs

---

after this PR

➜  phpstan-src git:(fast-typec) ✗ hyperfine 'php bin/phpstan analyze repro.php --debug' --runs=5
Benchmark 1: php bin/phpstan analyze repro.php --debug
  Time (mean ± σ):      7.590 s ±  0.241 s    [User: 6.818 s, System: 0.278 s]
  Range (min … max):    7.314 s …  7.953 s    5 runs

=> 13 % faster

[staabm]

this sort function only re-arranges SubtractableType, ConstantArrayType.

if we know beforehand that $types cannot contain one of these types -> skip the sort which will not change the order of types anyway