♻️(frontend) make Dialog's title optional

Introduce an option to render or omit the title in the Dialog component.
This is necessary for the advanced settings Dialog, which displays its
title in the Tab menu.

This could affect existing component API created by @manuhabitela.
The component will become less opinionated, offering more flexibility
in its usage (I am not 100% convinced it's actually a great idea).

Quick fix! Let's enhance it

src/frontend/src/primitives/Dialog.tsx

@@ -48,7 +48,7 @@ const StyledRACDialog = styled(RACDialog, {
 })
 
 export type DialogProps = RACDialogProps & {
-  title: string
+  title?: string
   onClose?: () => void
   /**
    * use the Dialog as a controlled component
@@ -96,13 +96,15 @@ export const Dialog = ({
                 pointerEvents="auto"
               >
                 <Box size="sm" type="dialog">
-                  <Heading
-                    slot="title"
-                    level={1}
-                    className={text({ variant: 'h1' })}
-                  >
-                    {title}
-                  </Heading>
+                  {!!title && (
+                    <Heading
+                      slot="title"
+                      level={1}
+                      className={text({ variant: 'h1' })}
+                    >
+                      {title}
+                    </Heading>
+                  )}
                   {typeof children === 'function'
                     ? children({ close })
                     : children}