Fix CI failures from 1.0.64-0 schema regeneration

- Go: Rename Type field to Discriminator in SessionBinaryAssetData to
  avoid conflict with the Type() SessionEventType interface method.
  Update codegen to handle this pattern automatically.
- Java: Add null for new maxInlineBinaryBytes param in
  SessionOptionsUpdateParams constructor call.
- Rust: Add exclude_host_skills field to SkillsDiscoverRequest test
  instantiations.
- Python: Add backwards-compat alias SessionFSReaddirWithTypesEntryType
  in copilot.rpc (generated name changed casing to SessionFs...).

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: stephentoub

go/rpc/zsession_events.go

@@ -872,6 +872,7 @@ CompletableFuture<Void> updateSessionOptionsForMode(CopilotSession session, Bool
                 null, // skillDirectories
                 null, // disabledSkills
                 null, // enableOnDemandInstructionDiscovery
+                null, // maxInlineBinaryBytes
                 patchPlugins, // installedPlugins
                 patchAgents, // customAgentsLocalOnly
                 null, // suppressCustomAgentPrompt

java/src/main/java/com/github/copilot/CopilotClient.java

@@ -8,3 +8,4 @@
 
 from .generated.rpc import *  # noqa: F401, F403
 from .generated.rpc import __all__  # noqa: F401
+from .generated.rpc import SessionFsReaddirWithTypesEntryType as SessionFSReaddirWithTypesEntryType  # noqa: F401

python/copilot/rpc.py

@@ -165,6 +165,7 @@ async fn should_discover_server_mcp_and_skills() {
                     .rpc()
                     .skills()
                     .discover(SkillsDiscoverRequest {
+                        exclude_host_skills: None,
                         project_paths: None,
                         skill_directories: Some(vec![
                             skill_directory.to_string_lossy().to_string(),
@@ -191,6 +192,7 @@ async fn should_discover_server_mcp_and_skills() {
                     .rpc()
                     .skills()
                     .discover(SkillsDiscoverRequest {
+                        exclude_host_skills: None,
                         project_paths: None,
                         skill_directories: Some(vec![
                             skill_directory.to_string_lossy().to_string(),

rust/tests/e2e/rpc_server.rs

@@ -3174,7 +3174,11 @@ export function generateGoSessionEventsCode(
             if (typeof propSchema !== "object") continue;
             const prop = propSchema as JSONSchema7;
             const isReq = required.has(propName);
-            const goName = toGoFieldName(propName);
+            let goName = toGoFieldName(propName);
+            // Avoid conflict with the Type() SessionEventType interface method
+            if (goName === "Type") {
+                goName = "Discriminator";
+            }
             const goType = resolveGoPropertyType(prop, variant.dataClassName, propName, isReq, ctx);
 
             if (prop.description) {