Fix Folia chunk ticket scheduling in 1.21.11 adapter

[Chwitst187]

Motivation

• Avoid calling MinecraftServer.execute(...) (via MCUtil.MAIN_EXECUTOR.execute(...)) from Folia region threads which throws UnsupportedOperationException, by scheduling the chunk ticket work through FAWE's task manager instead.

Description

• Replace io.papermc.paper.util.MCUtil.MAIN_EXECUTOR.execute(...) with TaskManager.taskManager().task(...) in PaperweightPlatformAdapter.addTicket(...) so chunk unload-cooldown tickets are scheduled via FAWE's scheduler abstraction.

Testing

• Attempted to compile the adapter with ./gradlew :worldedit-bukkit:adapters:adapter-1_21_11:compileJava --no-daemon, but the build did not proceed to Java compilation due to an unrelated Gradle configuration error: Task with name 'build' not found in project ':worldedit-libs:cli'.

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Codex Task

[Copilot]

Pull request overview

This PR fixes a Folia compatibility issue in the 1.21.11 adapter by replacing direct calls to MCUtil.MAIN_EXECUTOR.execute() with FAWE's TaskManager.taskManager().task() for scheduling chunk ticket operations. The change prevents UnsupportedOperationException when running on Folia, where region threads cannot directly execute tasks on the main thread.

Changes:

• Replace io.papermc.paper.util.MCUtil.MAIN_EXECUTOR.execute() with TaskManager.taskManager().task() in the addTicket() method to use FAWE's scheduler abstraction that properly handles both Bukkit and Folia environments

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[Copilot]

The same Folia compatibility issue exists in other adapter versions (adapter-1_21_5, adapter-1_21_6, and adapter-1_21_9) where MCUtil.MAIN_EXECUTOR.execute is still used in the addTicket method. Consider applying this fix consistently across all affected adapters to ensure Folia compatibility throughout the codebase.

Suggested change

	TaskManager.taskManager().task(() -> serverLevel
	TaskManager.taskManager().sync(() -> serverLevel