New unexprected behaviour in 2.0 version

Description

Same expression with same names param are now renamed and this breaks all queries with select and groups by same expression. In prepared statement params names are different and PostgreSQL serer refuses to execute such query.

How reproduce:

    public function testQuery(): void
    {
        $expr = new Expression("(site_id = :site)", ['site' => 1]);
        $sql = new Query($this->db())
            ->select($expr)
            ->from('users')
            ->groupBy($expr)
            ->createCommand()
            ->getSql();


        $this->assertSame('SELECT (site_id = :site) FROM "users" GROUP BY (site_id = :site)', $sql);
    }

Failed asserting that two strings are identical.
--- Expected
+++ Actual
@@ @@
-'SELECT (site_id = :site) FROM "users" GROUP BY (site_id = :site)'
+'SELECT (site_id = :site) FROM "users" GROUP BY (site_id = :site_0)'

Package version

2.0

PHP version

8.5

Start with the provided Query, Expression, select, and groupBy reproduction and inspect how repeated expression parameters are renamed when SQL is generated. Compare the generated SQL and prepared-statement parameters for PostgreSQL, then add or update a regression test using the shown assertion. Done means identical named parameters remain valid when the same expression is used in SELECT and GROUP BY.