Updates the implementation of Zod validation with unknown options for the following commands:

• adaptivecard send
• graph openextension add
• graph openextension set

What changes:

• Use .passthrough() on zod schema objects. (the passthrough function is explicitly for the usecase of unknown options. We werent using it, so I updated the code of some commands to use it.)
• Use optionsUtils.getUnknownOptions(args.options, zod.schemaToOptions(this.schema!)) to get unknown options, otherwise all options are returned