fix: label styles in bang shape

on-behalf-of: @Mermaid-Chart <hello@mermaidchart.com>

packages/mermaid/src/diagrams/mindmap/styles.ts

@@ -67,6 +67,9 @@ const getStyles: DiagramStylesProvider = (options) =>
   .section-root span {
     color: ${options.gitBranchLabel0};
   }
+  .section-2 span {
+    color: ${options.gitBranchLabel0};
+  }
   .icon-container {
     height:100%;
     display: flex;

packages/mermaid/src/rendering-util/rendering-elements/shapes/bang.ts

@@ -20,6 +20,7 @@ export async function bang<T extends SVGGraphicsElement>(parent: D3Selection<T>,
   const w = bbox.width + 10 * halfPadding;
   const h = bbox.height + 8 * halfPadding;
   const r = 0.15 * w;
+  const { cssStyles } = node;
 
   const minWidth = bbox.width + 20;
   const minHeight = bbox.height + 20;