Repeater edit value with array type.

 [
    [
      "rule" => "required",
      "value" => null,
    ],
  ]

Repeater

 Repeater::make('validationRuleInArray')
    ->schema([
        Select::make('rule')
            ->options(function (Get $get) {
                return $get('../../field') ? $get('../../field')->getValidationRules() : null;
            })
            ->required(),
        TextInput::make('value')
            ->nullable(),
    ])->columns(2)
    ->columnSpanFull(),

validationRuleInArray

Repeater