Fix namespace sorting of capitalcase

[Jeroeny]

• bug fix
• BC break? no

Before

use App\QueryCostSet;
use App\QueryCostsBootstrapped;

After

use App\QueryCostsBootstrapped;
use App\QueryCostSet;

[dg]

I think that this is better:

use App\QueryCostP;
use App\QueryCostR;
use App\QueryCostT;
use App\QueryCostsBootstrapped;
use App\QueryCostsXyz;

than this:

use App\QueryCostP;
use App\QueryCostR;
use App\QueryCostsBootstrapped;
use App\QueryCostsXyz;
use App\QueryCostT;

[symfonyaml]

Hi @dg !
Do you think this PR will merged at some point ?
At the moment I hack the uasort(...) function by "strtolowering" the compared values in PhpNamespace.php

uasort(
    $this->aliases[$of],
    fn(string $a, string $b): int => strtr(strtolower($a), '\\', ' ') <=> strtr(strtolower($b), '\\', ' '),
);