fix: select latest receipts and preserve unrelated Google Play purchases

[tiguven]

Summary

• Prevent partial Google Play live updates from expiring unrelated receipts by moving missing-receipt reconciliation to inventory refreshes (onSetPurchases). Notify listeners when receipts are removed, including when the refreshed list is empty.
• Fix LocalReceipts.find() selecting the oldest matching transaction when purchaseDate values differ. Select the newest known date while preserving existing ordering when either date is missing, including undated in-progress purchases that block repurchase.

Reported behavior

1. Have an active Google Play subscription.
2. Turn off auto-renewal in Google Play.
3. Completely close the app and relaunch it before the subscription expires.

The reported failure is that the subscription receipt/entitlement disappears after relaunch, although the current subscription period is still valid.

Scope

The Google Play change preserves expiration reporting introduced for #1632, while avoiding removals triggered by partial live events. Equal purchase dates and lastRenewalDate handling are unchanged.

Native query behavior is unchanged. The historical partial-success fallback was intentional (516875e), so query failures can still produce partial inventories. Handling incomplete native query results remains outside this PR.

Test plan

• Add 19 regression cases covering transaction ordering, missing dates, pending purchases, unrelated Google Play updates/consumption, and receipt removal notifications. Ten cases fail against unchanged upstream.
• npm test -- --runInBand — all 143 tests pass.
• make compile passes.
• make capacitor-package passes.
• Manual Google Play test: turn off auto-renewal, completely close the app, and relaunch before expiration; subscription entitlement is retained.
• After the subscription expires, refresh purchases and confirm ownership is revoked and listeners receive the receipt update.
• Additional device regression check: an unrelated product update or consumption event preserves an existing valid subscription.