fix: prevent TypeError when accessing 'cachedGroupMetadata' in sendMe…

[tiagomatrixd]

This PR fixes a TypeError that occurred when trying to check for 'cachedGroupMetadata' in the 'sendMessage' function options.

The error was caused by attempting to use the 'in' operator on an undefined or null value. This fix adds a type check to ensure 'options' is an object before using the 'in' operator.

Changes:

• Add a type check for 'options' to avoid errors when 'options' is undefined.

Why:

• This prevents crashes and unexpected behavior when 'sendMessage' is called with invalid options.

[whiskeysockets-bot]

Thanks for your contribution.

The next step is to wait for review and approval to merge it to main repository

The community can help reacting with a thumb up (:thumbsup:) for approval and rocket (:rocket:) for who has tested it.

To test this PR you can run the following command below:

# NPM
npm install @whiskeysockets/baileys@tiagomatrixd/Baileys#master
# YARN v2
yarn add @whiskeysockets/baileys@tiagomatrixd/Baileys#master