fix: batch mint quote subscription snapshots

[thesimplekid]

Description

---

Notes to the reviewers

---

Suggested CHANGELOG Updates

CHANGED

ADDED

REMOVED

FIXED

---

Checklist

• I followed the code style guidelines
• I ran just quick-check before committing
• If the Wallet API was modified (added/removed/changed), I have reflected those changes in the FFI bindings (crates/cdk-ffi)

[codecov]

Codecov Report

❌ Patch coverage is 98.91304% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 65.23%. Comparing base (8ce06b1) to head (5e495b8).

Files with missing lines	Patch %	Lines
crates/cdk/src/mint/subscription.rs	98.91%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1964      +/-   ##
==========================================
+ Coverage   65.16%   65.23%   +0.06%     
==========================================
  Files         330      330              
  Lines       56742    56818      +76     
==========================================
+ Hits        36976    37063      +87     
+ Misses      19766    19755      -11     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.