Reaction class should use Emoji Part rather than stdClass

[valzargaming]

This pull request makes a minor improvement to the Reaction class in the Discord package by initializing the emoji attribute with an Emoji object instead of a generic stdClass. This change enhances type safety and consistency when handling emoji data.

• Improved emoji initialization:
  • In the setIdAttribute method of Reaction.php, replaced the initialization of the emoji attribute from a stdClass to an Emoji object for better type safety and clarity.
  • Removed the unused stdClass import from Reaction.php.

[valzargaming]

It's unclear if this would introduce a BC in existing bots

[Copilot]

Pull request overview

This PR updates the Reaction part to initialize its emoji attribute as a proper Emoji Part rather than a generic stdClass, improving type safety and consistency when manipulating reaction emoji data.

Changes:

• Removed the unused stdClass import from Reaction.php.
• Updated Reaction::setIdAttribute() to initialize the emoji attribute via Factory::part(Emoji::class, ...) instead of new stdClass().

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[Copilot]

When the reaction has no existing emoji attribute, this initializes an Emoji Part with an empty payload. Because getEmojiAttribute() only injects guild_id via attributePartHelper() when converting non-Emoji data, an already-instantiated Emoji will not get guild_id populated, which can break Emoji behavior that relies on guild context (e.g., Emoji::guild, roles resolution). Consider initializing the Emoji Part with ['guild_id' => $this->guild_id] (or otherwise ensuring guild_id is set) when creating it here.

Suggested change

	$this->attributes['emoji'] = $this->factory->part(Emoji::class, [], true);
	$this->attributes['emoji'] = $this->factory->part(Emoji::class, ['guild_id' => $this->guild_id], true);

[valzargaming]

This PR might be pointless thankss to the getEmojiAttribute's attributePartHelper, but should probably be merged anyway just to satisfy the expectation of an Emoji being the value.