Fix repeated event config diffs when API versions are inherited

[cdarne]

WHY are these changes introduced?

Supersedes #8677, co-authored with @pobed2: same fix, applied only when reading remote config (see below). Its deploy regression tests are kept.

When an events subscription inherits [events].api_version, shopify app deploy reports events (updated) on every deploy (or requires --allow-updates in CI), and shopify app config link writes the version into every subscription. Core stores the inherited version on each subscription, but the CLI compares it with a TOML that omits it.

Example shopify.app.toml:

[events]
api_version = "2026-07"

  [[events.subscription]]
  handle = "product-updated"
  topic = "Product"
  actions = ["update"]
  uri = "https://example.com/events"

WHAT is this pull request doing?

When reading remote config (transformToEventsConfig), drops a subscription api_version equal to [events].api_version and keeps overrides. Deploy compares local and remote config through this same transform, so this one change fixes both commands.

	Before	After
app deploy, events unchanged	events (updated) every time	no events update
app config link	api_version written on every subscription	only overrides written

• Unlike Fix repeated event config diffs when API versions are inherited #8677, this doesn't fill in the version on upload: Core already fills it for subscriptions that omit it.
• config link also removes an explicit api_version equal to the default: Core stores it the same way as an inherited one, so such subscriptions follow later [events].api_version bumps.
• Only the current list shape ([[events.subscription]]) is handled; single-subscription modules follow with Support single-subscription events modules when reading remote configuration #8425.

How to manually test your changes?

With an app whose shopify.app.toml sets [events].api_version and omits api_version on a subscription:

pnpm shopify app deploy --path /path/to/app
pnpm shopify app deploy --path /path/to/app
pnpm shopify app config link --path /path/to/app

• The second deploy shows no events update.
• config link doesn't add api_version to subscriptions using the default; an overriding api_version is kept.

Checklist

• I've considered possible cross-platform impacts (Mac, Linux, Windows)
• I've considered possible documentation changes
• I've considered analytics changes to measure impact
• The change is user-facing — I've identified the correct bump type (patch for bug fixes · minor for new features · major for breaking changes) and added a changeset with pnpm changeset add

[rezaansyed]

🎩 'd the changes and work as expected

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