Class constants using bitwise operations are mixed

[SignpostMarv]

possibly related to #2139 and #1551

bitwise const: https://psalm.dev/r/222baddf7b

<?php
class Foo {
  const BAR = ENT_QUOTES | ENT_SUBSTITUTE | ENT_HTML5;
  
  public int $flags;
  
  public function __construct() {
    $this->flags = self::BAR;
  }
}

Psalm output (using commit e9cd791):

INFO: MixedAssignment - 8:5 - Cannot assign $this->flags to a mixed type

bitwise literal: https://psalm.dev/r/f6b76e4d2f

<?php
class Foo {
  const BAR = 1 | 2;
  
  public int $flags;
  
  public function __construct() {
    $this->flags = self::BAR;
  }
}

Psalm output (using commit e9cd791):

INFO: MixedAssignment - 8:5 - Cannot assign $this->flags to a mixed type

p.s. 1 | "nope" = 1, with a warning.

[SignpostMarv]

@muglug - I'm digging around in the code, and it appears that psalm does track the binary or operation, leaving Psalm\Type\Atomic\TInt as the sole member of a union, but the class const fetch comes back as mixed (with and without hoist consts)

[weirdan]

Can't reproduce anymore.