Fire reload event after everything has been reloaded (#9003)

This event is going to be more important very shortly (hopefully)

patches/server/Added-ServerResourcesReloadedEvent.patch

@@ -13,7 +13,7 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
      }
  
 +    // Paper start - add cause
-+    @Deprecated
++    @Deprecated @io.papermc.paper.annotation.DoNotUse
      public CompletableFuture<Void> reloadResources(Collection<String> dataPacks) {
 +        return this.reloadResources(dataPacks, io.papermc.paper.event.server.ServerResourcesReloadedEvent.Cause.PLUGIN);
 +    }
@@ -23,13 +23,13 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
          CompletableFuture<Void> completablefuture = CompletableFuture.supplyAsync(() -> {
              Stream<String> stream = dataPacks.stream(); // CraftBukkit - decompile error
 @@ -0,0 +0,0 @@ public abstract class MinecraftServer extends ReentrantBlockableEventLoop<TickTa
+             this.functionManager.replaceLibrary(this.resources.managers.getFunctionLibrary());
+             this.structureTemplateManager.onResourceManagerReload(this.resources.resourceManager);
+             org.bukkit.craftbukkit.block.data.CraftBlockData.reloadCache(); // Paper - cache block data strings, they can be defined by datapacks so refresh it here
++            new io.papermc.paper.event.server.ServerResourcesReloadedEvent(cause).callEvent(); // Paper - fire after everything has been reloaded
+         }, this);
  
-             this.worldData.setDataConfiguration(worlddataconfiguration);
-             this.resources.managers.updateRegistryTags(this.registryAccess());
-+            new io.papermc.paper.event.server.ServerResourcesReloadedEvent(cause).callEvent(); // Paper
-             // Paper start
-             if (Thread.currentThread() != this.serverThread) {
-                 return;
+         if (this.isSameThread()) {
 diff --git a/src/main/java/net/minecraft/server/commands/ReloadCommand.java b/src/main/java/net/minecraft/server/commands/ReloadCommand.java
 index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000 100644
 --- a/src/main/java/net/minecraft/server/commands/ReloadCommand.java

patches/server/Custom-Potion-Mixes.patch

@@ -32,9 +32,9 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
              this.worldData.setDataConfiguration(worlddataconfiguration);
              this.resources.managers.updateRegistryTags(this.registryAccess());
 +            net.minecraft.world.item.alchemy.PotionBrewing.reload(); // Paper
-             new io.papermc.paper.event.server.ServerResourcesReloadedEvent(cause).callEvent(); // Paper
              // Paper start
              if (Thread.currentThread() != this.serverThread) {
+                 return;
 diff --git a/src/main/java/net/minecraft/world/inventory/BrewingStandMenu.java b/src/main/java/net/minecraft/world/inventory/BrewingStandMenu.java
 index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000 100644
 --- a/src/main/java/net/minecraft/world/inventory/BrewingStandMenu.java