fix: changed add flow button to be square on collapsed screen (#4824)

Fixed button aspect ratio

Co-authored-by: Mike Fortman <michael.fortman@datastax.com>

src/frontend/src/pages/MainPage/components/header/index.tsx

@@ -135,10 +135,10 @@ const HeaderComponent = ({
                 ))}
               </div>
             </div>
-            <div className="flex gap-2">
             <ShadTooltip content="New Flow" side="bottom">
               <Button
                 variant="default"
+                className="!px-3 md:!px-4 md:!pl-3.5"
                 onClick={() => setNewProjectModal(true)}
                 id="new-project-btn"
               >
@@ -153,7 +153,6 @@ const HeaderComponent = ({
               </Button>
             </ShadTooltip>
           </div>
-          </div>
         </>
       )}
     </>