fix: initialize telemetry asynchronously without blocking (#666)

## Problem
VSCode Q chat experiences ~60-second delays when the telemetry endpoint
`aws-language-servers.us-east-1.amazonaws.com` is not allowlisted in
corporate networks.

Root Cause:
- Telemetry initialization runs synchronously during LSP server startup
- OTLPMetricExporter and OTLPLogExporter each attempt HTTP connections
with timeouts
- Chat remains unresponsive until all telemetry timeouts complete


https://github.com/user-attachments/assets/88f89a4d-5321-4019-a3ec-8e6c87631d77

## Solution
Make telemetry initialization to be non-blocking.

Changes:
- Wrap telemetry setup in setImmediate() callback
- LSP initialization returns immediately with `{ capabilities: {} }`
- Telemetry initializes asynchronously in background

## Testing
Chat responds quickly even when telemetry URL is blocked


https://github.com/user-attachments/assets/463bff7f-df24-4daf-80e9-086b073551f2

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## License

By submitting this pull request, I confirm that my contribution is made
under the terms of the Apache 2.0 license.

Author: chungjac

runtimes/runtimes/util/telemetryLspServer.ts

@@ -47,23 +47,30 @@ export function getTelemetryLspServer(
         const optOut = params.initializationOptions?.telemetryOptOut ?? true // telemetry disabled if option not provided
         const endpoint = runtime.getConfiguration('TELEMETRY_GATEWAY_ENDPOINT') ?? DEFAULT_TELEMETRY_ENDPOINT
 
-        logging.debug(`Configuring Runtimes OperationalTelemetry with endpoint: ${endpoint}`)
+        // Initialize telemetry asynchronously without blocking
+        setImmediate(() => {
+            try {
+                logging.debug(`Configuring Runtimes OperationalTelemetry with endpoint: ${endpoint}`)
 
-        const optel = OperationalTelemetryService.getInstance({
-            serviceName: props.name,
-            serviceVersion: props.version,
-            extendedClientInfo: params.initializationOptions?.aws?.clientInfo,
-            logging: logging,
-            endpoint: endpoint,
-            telemetryOptOut: optOut,
-        })
+                const optel = OperationalTelemetryService.getInstance({
+                    serviceName: props.name,
+                    serviceVersion: props.version,
+                    extendedClientInfo: params.initializationOptions?.aws?.clientInfo,
+                    logging: logging,
+                    endpoint: endpoint,
+                    telemetryOptOut: optOut,
+                })
 
-        OperationalTelemetryProvider.setTelemetryInstance(optel)
+                OperationalTelemetryProvider.setTelemetryInstance(optel)
 
-        logging.info(`Initialized Runtimes OperationalTelemetry with optOut=${optOut}`)
+                logging.info(`Initialized Runtimes OperationalTelemetry with optOut=${optOut}`)
 
-        setServerCrashTelemetryListeners()
-        setMemoryUsageTelemetry()
+                setServerCrashTelemetryListeners()
+                setMemoryUsageTelemetry()
+            } catch (error) {
+                logging.warn(`Failed to initialize telemetry: ${error}`)
+            }
+        })
 
         return {
             capabilities: {},