Add extensible custom logic to the domain update flow

This also adds beforeValidation hook to DomainCreateCustomFlow.

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=139828346

java/google/registry/flows/custom/CustomLogicModule.java

@@ -40,4 +40,10 @@ public class CustomLogicModule {
       CustomLogicFactory factory, EppInput eppInput, SessionMetadata sessionMetadata) {
     return factory.forDomainInfoFlow(eppInput, sessionMetadata);
   }
+
+  @Provides
+  static DomainUpdateFlowCustomLogic provideDomainUpdateFlowCustomLogic(
+      CustomLogicFactory factory, EppInput eppInput, SessionMetadata sessionMetadata) {
+    return factory.forDomainUpdateFlow(eppInput, sessionMetadata);
+  }
 }