Parens incorrectly removed when cloning the result of an expression

Prettier 2.7.1

PHP Plugin 0.19.1

# Options (if any):
# our .prettierrc
{
    "phpVersion": "8.1",
    "printWidth": 80,
    "tabWidth": 4,
    "useTabs": false,
    "singleQuote": true,
    "trailingCommaPHP": true,
    "braceStyle": "psr-2",
    "requirePragma": false,
    "insertPragma": false
}

Input:

$questions = clone ($panel->primaryViewer()?->questions() ?? new Questions());

Output:

$questions = clone $panel->primaryViewer()?->questions() ?? new Questions();

Expected behavior:

The outermost parens are being removed by prettier, affecting behavior. Given

$questions = clone ($panel->primaryViewer()?->questions() ?? new Questions());

if $panel->primaryViewer() is null, because prettier drops the outermost parens, it ends up leaving PHP to evaluate clone null - something I'm actively guarding against with the null coalesce operator.

I expect the parens to remain in place, resulting in the ?? new Questions() to be cloned.

まず、報告された PHP 入力を再現し、Prettier 2.7.1 と期待される出力を比較します。clone expression の周囲の括弧を formatter がどのように扱うかを追跡します。完了条件は、外側の括弧が残り、null-coalesce expression が clone されることです。このケースをカバーする回帰テストも追加します。