Allow server administrators to disable book size checks (#10457)

patches/server/Book-size-limits.patch

@@ -30,10 +30,11 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
      @Override
      public void handleEditBook(ServerboundEditBookPacket packet) {
 +        // Paper start - Book size limits
-+        if (!this.cserver.isPrimaryThread()) {
++        final io.papermc.paper.configuration.type.number.IntOr.Disabled pageMax = io.papermc.paper.configuration.GlobalConfiguration.get().itemValidation.bookSize.pageMax;
++        if (!this.cserver.isPrimaryThread() && pageMax.enabled()) {
 +            final List<String> pageList = packet.pages();
 +            long byteTotal = 0;
-+            final int maxBookPageSize = io.papermc.paper.configuration.GlobalConfiguration.get().itemValidation.bookSize.pageMax;
++            final int maxBookPageSize = pageMax.intValue();
 +            final double multiplier = Math.clamp(io.papermc.paper.configuration.GlobalConfiguration.get().itemValidation.bookSize.totalMultiplier, 0.3D, 1D);
 +            long byteAllowed = maxBookPageSize;
 +            for (final String page : pageList) {

patches/server/Paper-config-files.patch

@@ -513,6 +513,7 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
 +import java.util.List;
 +import java.util.Map;
 +import java.util.Objects;
++import java.util.OptionalInt;
 +
 +@SuppressWarnings({"CanBeFinal", "FieldCanBeLocal", "FieldMayBeFinal", "NotNullFieldNotInitialized", "InnerClassMayBeStatic"})
 +public class GlobalConfiguration extends ConfigurationPart {
@@ -723,7 +724,7 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
 +        public BookSize bookSize;
 +
 +        public class BookSize extends ConfigurationPart {
-+            public int pageMax = 2560; // TODO this appears to be a duplicate setting with one above
++            public IntOr.Disabled pageMax = new IntOr.Disabled(OptionalInt.of(2560)); // TODO this appears to be a duplicate setting with one above
 +            public double totalMultiplier = 0.98D; // TODO this should probably be merged into the above inner class
 +        }
 +        public boolean resolveSelectorsInBooks = false;