fix(devtools): allow plugin panel roots to scroll

Author: superposition

.changeset/router-plugin-scroll.md

@@ -0,0 +1,5 @@
+---
+'@tanstack/devtools': patch
+---
+
+Allow direct-mounted plugin panels to inherit full height for embedded scrolling.

packages/devtools/src/styles/use-styles.ts

@@ -664,10 +664,20 @@ const stylesFactory = (theme: DevtoolsStore['settings']['theme']) => {
     pluginsTabContent: css`
       width: 100%;
       height: 100%;
+      min-width: 0;
+      min-height: 0;
+
+      & > * {
+        min-width: 0;
+        min-height: 0;
+        width: 100%;
+        height: 100%;
+      }
 
       & > * > * {
         min-width: 0;
         min-height: 0;
+        width: 100%;
         height: 100%;
       }