Fix theme editor sync not reloading on schema changes

[kdaviduik]

WHY are these changes introduced?

Closes https://github.com/Shopify/developer-tools-team/issues/1033.

When using shopify theme dev --theme-editor-sync, making schema changes to section files (e.g., adding/modifying settings in {% schema %} blocks) did not trigger the theme customizer to reload. Users had to manually refresh the customizer to see schema updates.

This is a regression since version 3.88.1.

WHAT is this pull request doing?

Bumps @shopify/theme-hot-reload from ^0.0.18 to ^0.0.22.

Root cause: The hot-reload client was only checking javascriptTag changes to trigger full page reloads, but ignored schemaTag changes that the server was already sending.

The fix existed upstream in v0.0.20+ (commit 4785747 in the theme-hot-reload package), which adds:

if (event.payload?.updatedFileParts?.javascriptTag ||
    event.payload?.updatedFileParts?.schemaTag) {
    return fullPageReload(event.key);
}

How to test your changes?

Note: I'm currently having 1Password issues so I'm locked out of the admin and haven't been able to manually test these myself

1. Run shopify theme dev --theme-editor-sync in a theme directory
2. Open the theme customizer in your browser
3. Edit a section's {% schema %} block (e.g., add a new setting)
4. Save the file
5. Expected: The customizer reloads automatically and shows the new schema setting
6. Before fix: No reload occurred; manual refresh was required

Measuring impact

• n/a - this doesn't need measurement, e.g. a linting rule or a bug-fix

Checklist

• I've considered possible cross-platform impacts (Mac, Linux, Windows)
• I've considered possible documentation changes