fix(vite): exclude .tempest from vite's file watcher

[ewingd]

When the .tempest directory is being watched by Vite for changes, any javascript fetch requests trigger Vite to automatically refresh the page.

This excludes .tempest/* from the file watcher to prevent page refreshes on session or cache updates.

[brendt]

Don't worry about the failing tests, not your fault

[innocenzi]

This should be in the plugin itself, not in the published config 👍

[ewingd]

Sorry about the noise as I work to get the PR cleaned up, it's my first time working on a Vite plugin.

[innocenzi]

Thank you!