Heading has been given to the text in the welcome dialog of launch copilot

src/Explorer/QueryCopilot/Modal/WelcomeModal.tsx

@@ -53,7 +53,9 @@ export const WelcomeModal = ({ visible }: { visible: boolean }): JSX.Element =>
           </Stack>
           <Stack horizontalAlign="center">
             <Stack.Item align="center" style={{ textAlign: "center" }}>
-              <Text className="title bold">Welcome to Microsoft Copilot for Azure in Cosmos DB (preview)</Text>
+              <Text className="title bold" as={"h1"}>
+                Welcome to Microsoft Copilot for Azure in Cosmos DB (preview)
+              </Text>
             </Stack.Item>
             <Stack.Item align="center" className="text">
               <Stack horizontal>

src/Explorer/QueryCopilot/Modal/__snapshots__/WelcomeModal.test.tsx.snap

@@ -76,6 +76,7 @@ exports[`Query Copilot Welcome Modal snapshot test should render when isOpen is
           }
         >
           <Text
+            as="h1"
             className="title bold"
           >
             Welcome to Microsoft Copilot for Azure in Cosmos DB (preview)

src/Explorer/QueryCopilot/QueryCopilotPromptbar.tsx

@@ -374,7 +374,6 @@ export const QueryCopilotPromptbar: React.FC<QueryCopilotPromptProps> = ({
         )}
         <IconButton
           iconProps={{ iconName: "Send" }}
-          aria-label="Send"
           disabled={isGeneratingQuery || !userPrompt.trim()}
           style={{ marginLeft: 8 }}
           onClick={() => startGenerateQueryProcess()}
@@ -551,7 +550,6 @@ export const QueryCopilotPromptbar: React.FC<QueryCopilotPromptProps> = ({
           )}
           <IconButton
             id="likeBtn"
-            aria-label="Like"
             style={{ marginLeft: 20 }}
             iconProps={{ iconName: likeQuery === true ? "LikeSolid" : "Like" }}
             onClick={() => {
@@ -564,7 +562,6 @@ export const QueryCopilotPromptbar: React.FC<QueryCopilotPromptProps> = ({
           />
           <IconButton
             style={{ margin: "0 10px" }}
-            aria-label="Dislike"
             iconProps={{ iconName: dislikeQuery === true ? "DislikeSolid" : "Dislike" }}
             onClick={() => {
               if (!dislikeQuery) {