[Catalog] icon is square

Resolves #4618

GIT_ORIGIN_REV_ID=4d9fadd026d3e7b74879ef3c8b688cc41db88569
PiperOrigin-RevId: 732269424

Author: manabu-nakamura

catalog/java/io/material/catalog/dockedtoolbar/res/layout/cat_docked_toolbar_content.xml

@@ -93,7 +93,7 @@
     android:layout_weight="1">
   <Button
     android:id="@+id/docked_toolbar_button_overflow_button"
-    android:layout_width="40dp"
+    android:layout_width="48dp"
     android:layout_height="48dp"
     android:layout_gravity="center"
     app:iconTint="?attr/colorOnSecondaryContainer"