Add stubs for new activity execution APIs (#10158)

## What
Bump `go.temporal.io/api` and add stubs for newly added
`PauseActivityExecution`, `UnpauseActivityExecution`,
`ResetActivityExecution`, and `UpdateActivityExecutionOptions` APIs.

## Why
temporalio/api#743 added these RPCs to
`WorkflowServiceClient`/`WorkflowServiceServer`. Without stubs, any
branch bumping api-go fails to build.

## How did you test it?
`go build ./...` passes.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

---------

Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>

Author: rkannan82

client/frontend/client_gen.go

@@ -153,6 +153,10 @@ var (
 		"PauseActivity":                                {Scope: ScopeNamespace, Access: AccessWrite, Polling: PollingNone},
 		"UnpauseActivity":                              {Scope: ScopeNamespace, Access: AccessWrite, Polling: PollingNone},
 		"ResetActivity":                                {Scope: ScopeNamespace, Access: AccessWrite, Polling: PollingNone},
+		"UpdateActivityExecutionOptions":               {Scope: ScopeNamespace, Access: AccessWrite, Polling: PollingNone},
+		"PauseActivityExecution":                       {Scope: ScopeNamespace, Access: AccessWrite, Polling: PollingNone},
+		"UnpauseActivityExecution":                     {Scope: ScopeNamespace, Access: AccessWrite, Polling: PollingNone},
+		"ResetActivityExecution":                       {Scope: ScopeNamespace, Access: AccessWrite, Polling: PollingNone},
 		"UpdateWorkflowExecutionOptions":               {Scope: ScopeNamespace, Access: AccessWrite, Polling: PollingNone},
 		"DescribeDeployment":                           {Scope: ScopeNamespace, Access: AccessReadOnly, Polling: PollingNone}, // [cleanup-wv-pre-release]
 		"ListDeployments":                              {Scope: ScopeNamespace, Access: AccessReadOnly, Polling: PollingNone}, // [cleanup-wv-pre-release]

client/frontend/metric_client_gen.go

@@ -110,6 +110,10 @@ var (
 		"PauseActivity":                  func() any { return &workflowservice.PauseActivityResponse{} },
 		"UnpauseActivity":                func() any { return &workflowservice.UnpauseActivityResponse{} },
 		"ResetActivity":                  func() any { return &workflowservice.ResetActivityResponse{} },
+		"UpdateActivityExecutionOptions": func() any { return &workflowservice.UpdateActivityExecutionOptionsResponse{} },
+		"PauseActivityExecution":         func() any { return &workflowservice.PauseActivityExecutionResponse{} },
+		"UnpauseActivityExecution":       func() any { return &workflowservice.UnpauseActivityExecutionResponse{} },
+		"ResetActivityExecution":         func() any { return &workflowservice.ResetActivityExecutionResponse{} },
 		"UpdateWorkflowExecutionOptions": func() any { return &workflowservice.UpdateWorkflowExecutionOptionsResponse{} },
 
 		"DescribeDeployment":                           func() any { return &workflowservice.DescribeDeploymentResponse{} },        // [cleanup-wv-pre-release]

client/frontend/retryable_client_gen.go

@@ -169,6 +169,10 @@ func (s *redirectionInterceptorSuite) TestGlobalAPI() {
 		"PauseActivity":                                {},
 		"UnpauseActivity":                              {},
 		"ResetActivity":                                {},
+		"UpdateActivityExecutionOptions":               {},
+		"PauseActivityExecution":                       {},
+		"UnpauseActivityExecution":                     {},
+		"ResetActivityExecution":                       {},
 		"UpdateWorkflowExecutionOptions":               {},
 		"DescribeDeployment":                           {},
 		"ListDeployments":                              {},