fix: consider more expression types as in_value

[A4-Tacks]

When completing some expressions, it is almost always expected to have a non unit value

Partial of #20390

• ArrayExpr
• ParenExpr
• BreakExpr
• ReturnExpr
• PrefixExpr
• FormatArgsArg
• RecordExprField
• BinExpr (rhs only)
• IndexExpr (inside index only)

Example

fn main() {
    return $0;
}

Before this PR

fn main() {
    return if $1 {
        $0
    };
}

After this PR

fn main() {
    return if $1 {
        $2
    } else {
        $0
    };
}