zig fmt: Mixing comments and doc comments has weird results

[squeek502]

var foo: u8 = undefined;

/// doc comment
// normal comment
var bar: u8 = undefined;

I expect the above to be unchanged by zig fmt, but instead it changes it to:

var foo: u8 = undefined;
/// doc comment
// normal comment
var bar: u8 = undefined;

Not sure if this is intended behavior or not.

---

Note also that this currently remains unchanged:

var foo: u8 = undefined;

// normal comment
/// doc comment
var bar: u8 = undefined;

[ifreund]

Fixed by #7920

[Mouvedia]

These should be moved to 0.8.0.