fix: use correct getCachedEmbeddings query_field_sub_name

[bmgalego]

to get cached embeddings the db adapter looks for the sub_name of the memory content and the correct key is text not content.

interface Content {
    /** The main text content */
    text: string;

    /** Optional action associated with the message */
    action?: string;

    /** Optional source/origin of the content */
    source?: string;

    /** URL of the original message/post (e.g. tweet URL, Discord message link) */
    url?: string;

    /** UUID of parent message if this is a reply/thread */
    inReplyTo?: UUID;

    /** Array of media attachments */
    attachments?: Media[];

    /** Additional dynamic properties */
    [key: string]: unknown;
}

[shakkernerd]

Nice catch.