⚒️ Improve ExprBalance

[AyhamAl-Ali]

Description

• Drop the usage of deprecated methods in ExprBalance and switch to the recommended methods
• ~~Remove the ability to use delete player's balance which doesn't make sense, users should use reset player's balance instead (though it's better to mention in release notes)~~

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Target Minecraft Versions: Any Requirements: None Related Issues: None

[Pikachu920]

Remove the ability to use delete player's balance which doesn't make sense, users should use reset player's balance instead (though it's better to mention in release notes)

~~It is likely that the reason the delete changer worked is because the delete changer also accepts clear (e.g. clear player's balance). because of that, i'm not sure it makes sense to remove it.~~

Looks like @APickledWalrus brought this up already