Fix Bedrock Claude Sonnet 4.6 model ID, cc #11509 (#11569)

Replace the incorrect Sonnet 4.6 Bedrock ID with the AWS-supported
model ID in the model registry and Bedrock capability lists.

Remove references to the deprecated dated ID and update Bedrock
tests to validate the corrected Sonnet 4.6 identifier.

Author: PeterDaveHello

packages/types/src/providers/bedrock.ts

@@ -27,7 +27,7 @@ export const bedrockModels = {
 		maxCachePoints: 4,
 		cachableFields: ["system", "messages", "tools"],
 	},
-	"anthropic.claude-sonnet-4-6-20260114-v1:0": {
+	"anthropic.claude-sonnet-4-6": {
 		maxTokens: 8192,
 		contextWindow: 200_000, // Default 200K, extendable to 1M with beta flag 'context-1m-2025-08-07'
 		supportsImages: true,
@@ -523,7 +523,7 @@ export const BEDROCK_REGIONS = [
 export const BEDROCK_1M_CONTEXT_MODEL_IDS = [
 	"anthropic.claude-sonnet-4-20250514-v1:0",
 	"anthropic.claude-sonnet-4-5-20250929-v1:0",
-	"anthropic.claude-sonnet-4-6-20260114-v1:0",
+	"anthropic.claude-sonnet-4-6",
 	"anthropic.claude-opus-4-6-v1",
 ] as const
 
@@ -538,7 +538,7 @@ export const BEDROCK_1M_CONTEXT_MODEL_IDS = [
 export const BEDROCK_GLOBAL_INFERENCE_MODEL_IDS = [
 	"anthropic.claude-sonnet-4-20250514-v1:0",
 	"anthropic.claude-sonnet-4-5-20250929-v1:0",
-	"anthropic.claude-sonnet-4-6-20260114-v1:0",
+	"anthropic.claude-sonnet-4-6",
 	"anthropic.claude-haiku-4-5-20251001-v1:0",
 	"anthropic.claude-opus-4-5-20251101-v1:0",
 	"anthropic.claude-opus-4-6-v1",

src/api/providers/__tests__/bedrock.spec.ts

@@ -703,7 +703,7 @@ describe("AwsBedrockHandler", () => {
 
 		it("should apply 1M tier pricing when awsBedrock1MContext is true for Claude Sonnet 4.6", () => {
 			const handler = new AwsBedrockHandler({
-				apiModelId: "anthropic.claude-sonnet-4-6-20260114-v1:0",
+				apiModelId: "anthropic.claude-sonnet-4-6",
 				awsAccessKey: "test",
 				awsSecretKey: "test",
 				awsRegion: "us-east-1",