agentHost: remove stale metadata lint suppressions

The metadata boundary is now excluded from the rule, so suppressions added on main became unused and failed hygiene.\n\n(Written by Copilot)\n\nCo-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: roblourens

src/vs/platform/agentHost/common/meta/agentMergeMessageMeta.ts

@@ -18,7 +18,6 @@ interface IHasAgentMergeMessageMeta {
  * tells them apart.
  */
 export function isAgentMergeMessage(source: IHasAgentMergeMessageMeta): boolean {
-	// eslint-disable-next-line local/code-no-untyped-meta-access -- sanctioned first hop into the namespaced Agent Merge slot; validated here.
 	return source._meta?.[AGENT_MERGE_MESSAGE_META_KEY] === true;
 }
 

src/vs/platform/agentHost/common/meta/agentWorkspaceContinuationMeta.ts

@@ -11,7 +11,6 @@ interface IHasAgentWorkspaceContinuationMeta {
 
 /** Whether the message is the internal request that resumes a turn after workspace conversion. */
 export function isAgentWorkspaceContinuationMessage(source: IHasAgentWorkspaceContinuationMeta): boolean {
-	// eslint-disable-next-line local/code-no-untyped-meta-access -- sanctioned first hop into the namespaced workspace-continuation slot; validated here.
 	return source._meta?.[AGENT_WORKSPACE_CONTINUATION_META_KEY] === true;
 }
 

src/vs/platform/agentHost/common/meta/automationMeta.ts

@@ -30,6 +30,5 @@ export function isAgentHostLegacyAutomationImportPending(source: IHasAutomationM
 }
 
 function readAutomationMetaSlot(source: IHasAutomationMeta, key: string): unknown {
-	// eslint-disable-next-line local/code-no-untyped-meta-access -- sanctioned reader for validated Automation metadata slots.
 	return source._meta?.[key];
 }