fix: emphasis textConfig should be set on host el rather than attached text el.

src/util/graphic.ts

@@ -707,7 +707,8 @@ export function setLabelStyle<LDI>(
                 normalModel,
                 opt
             ));
-            emphasisState.textConfig = createTextConfig(
+            const targetElEmphasisState = targetEl.ensureState('emphasis');
+            targetElEmphasisState.textConfig = createTextConfig(
                 emphasisState.style,
                 emphasisModel,
                 opt