fix: Remove stray backtick fences from CHANGELOG and fix trace data propagation check

- Remove stray 4-backtick sequences from CHANGELOG.md that were breaking markdown rendering
- Fix getTraceData to check actual external propagation context value instead of just registration
- This ensures proper fallback to Sentry scope-based propagation when no OTel span is active
Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

Author: cursoragent

CHANGELOG.md

@@ -61,8 +61,6 @@
  });
 ```
 
-````
-
 ### Other Changes
 
 - "You miss 100 percent of the chances you don't take. — Wayne Gretzky" — Michael Scott
@@ -3799,4 +3797,3 @@ A full list of changes in the `5.x` release of the SDK can be found in the [5.x
 ## 4.x
 
 A full list of changes in the `4.x` release of the SDK can be found in the [4.x Changelog](./docs/changelog/v4.md).
-````

packages/core/src/utils/traceData.ts

@@ -1,7 +1,7 @@
 import{getAsyncContextStrategy}from'../asyncContext';
 import{getMainCarrier}from'../carrier';
 importtype{Client}from'../client';
-import{getClient,getCurrentScope,hasExternalPropagationContext}from'../currentScopes';
+import{getClient,getCurrentScope,getExternalPropagationContext}from'../currentScopes';
 import{isEnabled}from'../exports';
 importtype{Scope}from'../scope';
 import{getDynamicSamplingContextFromScope,getDynamicSamplingContextFromSpan}from'../tracing';
@@ -49,7 +49,7 @@ export function getTraceData(
 
 // When no active span and external propagation context is registered (e.g. OTLP integration),
 // return empty to let the OTel propagator handle outgoing request propagation.
-if(!span&&hasExternalPropagationContext()){
+if(!span&&getExternalPropagationContext()){
 return{};
 }