Perf: Optimization of cropping component result acquisition & optimization of cropping frame prompts

[jyqwq]

Description

裁剪组件支持 blob 和 base64 输出，优化裁剪弹窗标题，更新裁剪示例页面

Type of change

Please delete options that are not relevant.

• Bug fix (non-breaking change which fixes an issue)
• [ ✅ ] New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update
• Please, don't make changes to pnpm-lock.yaml unless you introduce a new test example.

Checklist

ℹ️ Check all checkboxes - this will indicate that you have done everything in accordance with the rules in CONTRIBUTING.

• [ ✅ ] If you introduce new functionality, document it. You can run documentation with pnpm run docs:dev command.
• [ ✅ ] Run the tests with pnpm test.
• [ ✅ ] Changes in changelog are generated from PR name. Please, make sure that it explains your changes in an understandable manner. Please, prefix changeset messages with feat:, fix:, perf:, docs:, or chore:.
• [ ✅ ] My code follows the style guidelines of this project
• [ ✅ ] I have performed a self-review of my own code
• [ ✅ ] I have commented my code, particularly in hard-to-understand areas
• [ ✅ ] I have made corresponding changes to the documentation
• [ ✅ ] My changes generate no new warnings
• [ ✅ ] I have added tests that prove my fix is effective or that my feature works
• [ ✅ ] New and existing unit tests pass locally with my changes
• [ ✅ ] Any dependent changes have been merged and published in downstream modules

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