fix(search): Fix accidental HomePageSearchBar input classes override on spread operator

Signed-off-by: Carlos Esteban Lopez <lcarlosesteb@vmware.com>

.changeset/pink-goats-talk.md

@@ -1,6 +1,7 @@
 ---
 '@backstage/plugin-search-react': patch
 '@backstage/plugin-search': patch
+'@backstage/plugin-techdocs': patch
 ---
 
 Fix SearchBar styles & update StoryBook stories for custom styles for `notchedOutline` class.

plugins/search/src/components/HomePageComponent/HomePageSearchBar.tsx

@@ -66,12 +66,12 @@ export const HomePageSearchBar = (props: HomePageSearchBarProps) => {
       onSubmit={handleSubmit}
       onChange={handleChange}
       InputProps={{
+        ...props.InputProps,
         classes: {
           root: classes.searchBarRoot,
           notchedOutline: classes.searchBarOutline,
           ...props.InputProps?.classes,
         },
-        ...props.InputProps,
       }}
       {...props}
     />