emoji [nfc]: Fix a parameter name on getFilteredEmojiNames.
emoji [nfc]: Fix a parameter name on getFilteredEmojiNames.

Since commit 8f4e4e7c2, all callers pass a value called
activeImageEmojiByName, which since 303af5c16 contains not only
realm emoji but also the Zulip extra emoji.

vishwesh3/zulip-mobile,vishwesh3/zulip-mobile,vishwesh3/zulip-mobile,vishwesh3/zulip-mobile