Enhance Accessibility: Add ARIA Attributes to SearchModal Component

Signed-off-by: JeevaRamanathan <jeevaramanathan.m@infosys.com>

.changeset/thirty-mangos-travel.md

@@ -0,0 +1,5 @@
+---
+'@backstage/plugin-search': patch
+---
+
+Added `aria-label` attribute to DialogTitle element and set `aria-modal` attribute to `true` for improved accessibility in the search modal.

plugins/search/src/components/SearchModal/SearchModal.tsx

@@ -190,7 +190,8 @@ export const SearchModal = (props: SearchModalProps) => {
         paperFullWidth: classes.paperFullWidth,
       }}
       onClose={toggleModal}
-      aria-labelledby="search-modal-title"
+      aria-label="Search Modal"
+      aria-modal="true"
       fullWidth
       maxWidth="lg"
       open={open}