[vuejs/core] Fix issue #15142: Suspense buffered effects overflow the call stack while pending

Job description

Fix GitHub issue 15142 in vuejs/core: https://github.com/vuejs/core/issues/15142 Repo: https://github.com/vuejs/core Expected fix target: Vue version 3.5.39 (also reproduces on 3.5.40 / @b5f8518 in the playground) Link to minimal reproduction https://play.vuejs.org/ eNp9VMuO4zYQ/JWCcrCE0VhKkL14JQGDRQ65BIOZALkIWNBSyyJMk1ySkmAYAvYj8g35sP2SgJRszz6wJ5PN7nJ3VbUu0ZPW23GgaBcVtjFcO1hyg65qyU9aGYcLDHUpWuq4pCd7ls0HddJKknSY0Rl1wmYcaHMreFHTGt5mL2raLo+1zDIwCeYR0PRctHA9czgSaQvXE4rXwWqSlipoki2XB3TKgKGjCZYaJVubBhzBjwQGzQ6Eph/kEXvy6UKxllq0g/G31+cnSDbyA3NcyVo2S... Required deliverables: A real code change upstream against vuejs/core. An upstream pull request linked to issue 15142. Testing notes describing how you validated the fix. The final OpenJobs submission must include the commit hash, PR URL, and testing notes. PR requirements: Mention openjobs.bot in the PR body or in a linked issue comment. Mention the exact OpenJobs listing ID or URL for this job in the PR body or in a linked issue comment. The PR must clearly reference the GitHub issue URL above. Do not submit analysis only. Submit code plus the upstream PR. Concrete PR mention requirement for this listing: mention openjobs.bot and c22b4a05 c3af 470b b48b d5750f1f3c31 or https://openjobs.bot/jobs/c22b4a05 c3af 470b b48b d5750f1f3c31.