[docs] Components without counterpart in design kits

Based on mui#27439 (comment)

docs/src/pages/components/grid/grid.md

@@ -12,7 +12,7 @@ materialDesign: https://material.io/design/layout/understanding-layout.html
 The [grid](https://material.io/design/layout/responsive-layout-grid.html) creates visual consistency between layouts while allowing flexibility across a wide variety of designs.
 Material Design's responsive UI is based on a 12-column grid layout.
 
-{{"component": "modules/components/ComponentLinkHeader.js"}}
+{{"component": "modules/components/ComponentLinkHeader.js", "design": false}}
 
 > ⚠️ The `Grid` component shouldn't be confused with a data grid; it is closer to a layout grid. For a data grid head to [the `DataGrid` component](/components/data-grid/).
 

docs/src/pages/components/masonry/masonry.md

@@ -12,7 +12,7 @@ Masonry maintains a list of content blocks with a consistent width but variable
 The contents are ordered by row.
 If a row is already filled with the specified number of columns, the next item starts another row, and it is added to the shortest column.
 
-{{"component": "modules/components/ComponentLinkHeader.js", "design": true}}
+{{"component": "modules/components/ComponentLinkHeader.js", "design": false}}
 
 > Warning: This component has been developed with the use of CSS Grid Level 2. Unfortunately, Chrome only allows to render at most 1,000 rows for each grid.
 > Hence, with the current design, a masonry component has a maximum height of 2,000px, and the items beyond this height will fail to be rendered.

docs/src/pages/components/stack/stack.md

@@ -8,7 +8,7 @@ githubLabel: 'component: Stack'
 
 <p class="description">The Stack component manages layout of immediate children along the vertical or horizontal axis with optional spacing and/or dividers between each child.</p>
 
-{{"component": "modules/components/ComponentLinkHeader.js"}}
+{{"component": "modules/components/ComponentLinkHeader.js", "design": false}}
 
 ## Usage