ref(logs): extract attribute compilation to dedicated method in LogsHandler

Extracts the attribute merging logic into a new compileAttributes() method
for better organization and readability. The new method properly structures
log attributes with namespaced keys (log.context, log.extra, log.channel)
while maintaining the existing sentry.origin attribute.

Author: huangdijia

src/Monolog/LogsHandler.php

@@ -66,7 +66,7 @@ public function handle($record): bool
             self::getSentryLogLevelFromMonologLevel($record['level']),
             $record['message'],
             [],
-            array_merge($record['context'], $record['extra'], ['sentry.origin' => 'auto.logger.monolog'])
+            $this->compileAttributes($record)
         );
 
         return $this->bubble === false;
@@ -123,4 +123,17 @@ public function __destruct()
             // Just in case so that the destructor can never fail.
         }
     }
+
+    /**
+     * @param array<string, mixed>|LogRecord $record
+     */
+    protected function compileAttributes($record): array
+    {
+        return [
+            'log.context' => $record['context'],
+            'log.extra' => $record['extra'],
+            'log.channel' => $record['channel'],
+            'sentry.origin' => 'auto.logger.monolog',
+        ];
+    }
 }