Enum interface wasn't generated

[VadimSaveljev]

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Description of bug

For some reason enum PalletAttributes wasn't generated into types-substrate
https://github.com/paritytech/substrate/blob/master/frame/nfts/src/types.rs#L329

while enum PalletFeature generated successfully
https://github.com/paritytech/substrate/blob/master/frame/nfts/src/types.rs#L427

    /** @name PalletNftsPalletFeature (642) */
    interface PalletNftsPalletFeature extends Enum {
        readonly isTrading: boolean;
        readonly isAttributes: boolean;
        readonly isApprovals: boolean;
        readonly isSwaps: boolean;
        readonly type: 'Trading' | 'Attributes' | 'Approvals' | 'Swaps';

Steps to reproduce

No response

[VadimSaveljev]

apparently this enum is absent in getMetadata() results, hence absent in generated types