Fix hydrate-local-settings next-step hint to match README workflow

[paulyuk]

What

hydrate-local-settings.{sh,ps1} prints Run 'func start' to start the host. as its final line. That's incomplete — the README's actual local-run workflow needs three terminals:

azurite --silent --skipApiVersionCheck --location .azurite   # terminal A
uv run func start                                            # terminal B
uv run python chat.py                                        # terminal C

Users following the script's hint get stuck — Azurite isn't running (bindings fail with 'No connection could be made'), and bare func start skips the uv run prefix so Core Tools picks the wrong Python interpreter.

Why

Caught while running through a fresh ~/src/m365-test1 clone end-to-end post-azd provision. The script tells the user one thing; the README tells them another. The script wins because it's the last thing they saw.

Change

Update both the bash and PowerShell variants to echo the three-terminal block verbatim from the README, so users land on the working path without re-reading docs.

Test

• bash -n infra/scripts/hydrate-local-settings.sh passes
• Manually ran the patched bash script in a hydrated env; output now matches the README quickstart block.
• No behavior change beyond the final echo block.

[paulyuk]

Consolidated into a single PR per author preference: https://github.com/Azure-Samples/m365-inbox-serverless-agent-python/pull/(see latest)