SpawnReason#Beehive being affected by `natural_mob_spawning`

Server Implementation

Paper

Server Version

1.15.2

Describe the bug

As per https://github.com/IntellectualSites/PlotSquared/blob/6259287dffe03e6b0ccd29a2a485aa07aa8b71e6/Bukkit/src/main/java/com/plotsquared/bukkit/listener/PlayerEvents.java#L2078, the SpawnReason BEEHIVE is treated like all the other natural spawns. This however means that when someone has a bee nest/hive and spawns bees with eggs or spawners (i.e. manually not naturally), then they will "vanish" in the hive, as they despawn but the respective spawn event will be cancelled, so they can never leave the hive again.

Since natural_mob_spawning is no flag under the users control afaict, there is nothing they can do about it. Also if someone wants bees, that doesn't imply they want mobs and animals to appear, anyway, so that coupling may be questionable (decorative mobs vs regular mobs).

The only downside I could imagine here is that if someone uses beehives for the sole purpose of decorative building, they may want to stop bees from spawning and would simply use natural_mob_spawning.

So TLDR: With natural_mob_spawning = false, Bees will go into Hives, but never leave them.
A solution could involve counting the Bees in the Hive and somehow allow them to leave or just straight off allowing BeeHive spawning Bees.

To Reproduce

• Have a plot with bee hives/nests
• Spawn a bee
• Watch it enter the hive/nest
• Never see it again.

Expected behaviour

• Have a plot with bee hives/nests
• Spawn a bee
• Watch it enter the hive/nest
• Watch it leave the hive/nest

Screenshots / Videos

No response

Error log (if applicable)

No response

Plot Debugpaste

https://example.com

PlotSquared Version

5.13.11-Premium

Checklist

• I have included a Plot debugpaste.
• I am using the newest build from https://www.spigotmc.org/resources/77506/ and the issue still persists.

Anything else?

Since this is a migration from https://issues.intellectualsites.com/issue/PS-44, I kinda "lied" in terms of being on the most recent version/debug paste, since I know that this issue would be targeted for v6 and is not fixed yet.
In fact it probably needs some design decisions before being coded in any way.

Start with Bukkit/src/main/java/com/plotsquared/bukkit/listener/PlayerEvents.java around the referenced SpawnReason handling, then review how natural_mob_spawning treats BEEHIVE spawns. Reproduce the reported behavior with a bee spawned near a hive or nest while the flag is false. Done means spawned bees can enter and later leave hives without breaking the intended natural-spawning control.