types(Interaction): allow Interaction cached properties to be type narrowed (#6668)

Co-authored-by: Sugden <28943913+NotSugden@users.noreply.github.com>
Co-authored-by: Rodry <38259440+ImRodry@users.noreply.github.com>
Co-authored-by: Antonio Román <kyradiscord@gmail.com>

src/structures/Interaction.js

@@ -120,6 +120,22 @@ class Interaction extends Base {
     return Boolean(this.guildId && this.member);
   }
 
+  /**
+   * Indicates whether or not this interaction is both cached and received from a guild.
+   * @returns {boolean}
+   */
+  inCachedGuild() {
+    return Boolean(this.guild && this.member);
+  }
+
+  /**
+   * Indicates whether or not this interaction is received from an uncached guild.
+   * @returns {boolean}
+   */
+  inRawGuild() {
+    return Boolean(this.guildId && !this.guild && this.member);
+  }
+
   /**
    * Indicates whether this interaction is a {@link CommandInteraction}.
    * @returns {boolean}