web: Setup: Add a note that the labgrid setup does not need to succeed

User feedback told us that it is not always the case that they already
have a working labgrid environment when starting with the LXA TAC.

This hint is intended to help new users to understand that they can
configure labgrid later, if they wish to.

Signed-off-by: Chris Fiege <cfi@pengutronix.de>

web/src/Setup.tsx

@@ -243,6 +243,10 @@ export default function Setup() {
                         Go back to the exporter configuration step to make
                         changes and click "Next" once you are satisfied.
                       </Box>
+                      <Box variant="p">
+                        If your labgrid configuration is not yet successful, you
+                        can correct it later.
+                      </Box>
                       <LabgridService />
                     </SpaceBetween>
                   </Container>