Make sure thread-cached arrays are reset

worldedit-bukkit/adapters/adapter-1_17_1/src/main/java/com/sk89q/worldedit/bukkit/adapter/impl/fawe/v1_17_R1_2/PaperweightPlatformAdapter.java

@@ -369,8 +369,12 @@ public final class PaperweightPlatformAdapter extends NMSAdapter {
             }
             return levelChunkSection;
         } catch (final Throwable e) {
-            Arrays.fill(blockToPalette, Integer.MAX_VALUE);
             throw e;
+        } finally {
+            Arrays.fill(blockToPalette, Integer.MAX_VALUE);
+            Arrays.fill(paletteToBlock, Integer.MAX_VALUE);
+            Arrays.fill(blockStates, 0);
+            Arrays.fill(blocksCopy, 0);
         }
     }
 

worldedit-bukkit/adapters/adapter-1_18/src/main/java/com/sk89q/worldedit/bukkit/adapter/impl/fawe/v1_18_R1/PaperweightPlatformAdapter.java

@@ -395,8 +395,12 @@ public final class PaperweightPlatformAdapter extends NMSAdapter {
 
             return levelChunkSection;
         } catch (final Throwable e) {
-            Arrays.fill(blockToPalette, Integer.MAX_VALUE);
             throw e;
+        } finally {
+            Arrays.fill(blockToPalette, Integer.MAX_VALUE);
+            Arrays.fill(paletteToBlock, Integer.MAX_VALUE);
+            Arrays.fill(blockStates, 0);
+            Arrays.fill(blocksCopy, 0);
         }
     }
 

worldedit-bukkit/adapters/adapter-1_18_2/src/main/java/com/sk89q/worldedit/bukkit/adapter/impl/fawe/v1_18_R2/PaperweightPlatformAdapter.java

@@ -399,8 +399,12 @@ public final class PaperweightPlatformAdapter extends NMSAdapter {
 
             return new LevelChunkSection(layer, blockStatePalettedContainer, biomes);
         } catch (final Throwable e) {
-            Arrays.fill(blockToPalette, Integer.MAX_VALUE);
             throw e;
+        } finally {
+            Arrays.fill(blockToPalette, Integer.MAX_VALUE);
+            Arrays.fill(paletteToBlock, Integer.MAX_VALUE);
+            Arrays.fill(blockStates, 0);
+            Arrays.fill(blocksCopy, 0);
         }
     }