ci: Change PR trigger test from compatibility test to minimal one

[Ahzyuan]

Prep Steps

Before we dive in, let's confirm you've unlocked all these steps

• 🔍 I've checked for duplicate PRs (click to check)
• 📜 I've followed contribution guidelines
  • ✨ I've linted and formatted my code (how?)
  • 🔧 I've formatted the PR title appropriately (how?)
  • 🎯 I've targeted the master branch (how?)
  • 👐 I've allowed maintainer edits on my branch (how? → See step 6)
• 🛡️ I've added/updated tests to cover my changes if prossible (how?)
• 📝 I've added/updated the documentation for any new logic introduced (how?)
• ⏳ I understand @Ahzyuan has been busy lately and may need time to review. (we appreciate your patience!)

Type of changes

• 🐞 Bug fix
• 🌟 New feature
• 🧪 Tests
• 🏗 Refactoring
• ⚡ Performance improvement
• 📖 Documentation / docstrings
• ↩️ Revert
• 🧩 Other

Description

Purpose

This PR is to change the type of test triggered by PR from compatibility test to the minimal test, so as to diagnose bugs as soon as possible. Meanwhile, using the minimal test helps to save my Github Actions quota.

Changes:

• .github/workflows/compatibility_test.yml: delete the PR trigger conditions.
• .github/workflows/minimal_test.yml: add the PR trigger conditions which are set in the compatibility_test.yml at past.
• docs/src/en/contribute/conventions.md: add ci as a valid branch name prefix.
• docs/src/en/contribute/prs.md, docs/src/en/others/management.md: update all contents related to both the types of test in the documentation.