invariant_booleans does not correctly handle switch statements

[maxlapides]

Describe the issue
It seems like invariant_booleans doesn't understand quite how switch statements work 🤔

To Reproduce

void test() {
  final segments = [];
  const label = 'hi';
  switch (label) {
    case 'hi':
      if (segments.length != 2) return;
      break;
    case 'bye':
      if (segments.length != 2) return; # invariant_booleans issue
      break;
  }
}

This code generates this warning on the first statement under case 'bye':

Conditions should not unconditionally evaluate to `true` or to `false`. verify: segments.length != 2.

Expected behavior

This code should not violate the invariant_booleans rule.

[maxlapides]

Looks like the invariant_booleans rule is deprecated, so we can close this issue. dart-archive/linter#3497