Related to: [BS-3559](https://linear.app/affine-design/issue/BS-3559/ui-%E5%9B%BE%E7%89%87-loading-%E5%8F%98%E9%87%8F%E6%9B%B4%E6%96%B0)
<!-- This is an auto-generated comment: release notes by coderabbit.ai -->
## Summary by CodeRabbit
- **Style**
- Improved the appearance of image loading indicators by updating background and ring colors for a more consistent visual experience.
- **New Features**
- Added customization options for the loading icon's ring color.
- **Chores**
- Updated the "@toeverything/theme" dependency to version ^1.1.15 across multiple packages for improved consistency and compatibility.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
Closes: [BS-3555](https://linear.app/affine-design/issue/BS-3555/ui-attachment-loading-变量更新)
Closes: [BS-3559](https://linear.app/affine-design/issue/BS-3559/ui-图片-loading-变量更新)
### Dark
<img width="625" alt="Screenshot 2025-05-26 at 20 32 36" src="https://github.com/user-attachments/assets/93501e3d-8fc6-45f9-84a0-ac147e5c5f9f" />
### Light
<img width="623" alt="Screenshot 2025-05-26 at 20 32 25" src="https://github.com/user-attachments/assets/7d5bc128-6667-45b5-982d-dab3a22706a7" />
<!-- This is an auto-generated comment: release notes by coderabbit.ai -->
## Summary by CodeRabbit
- **New Features**
- Loading icons are now invoked as functions, allowing for more flexible and customizable rendering with parameters like size and progress.
- **Refactor**
- Replaced theme-dependent and static loading icon references with a unified `LoadingIcon()` component across multiple components and blocks.
- Removed legacy icon variants and simplified icon import statements, centralizing icon rendering logic.
- **Style**
- Updated styles for loading and reload buttons to use theme-aware CSS variables.
- Enlarged and repositioned loading indicators in image blocks for better visibility.
- **Bug Fixes**
- Achieved consistent loading icon rendering across various blocks and components by standardizing icon invocation.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
Related to: [BS-3143](https://linear.app/affine-design/issue/BS-3143/更新-loading-和错误样式)
<!-- This is an auto-generated comment: release notes by coderabbit.ai -->
## Summary by CodeRabbit
- **New Features**
- Introduced a unified resource controller for managing image and attachment resources, providing improved loading, error, and state handling.
- Added a visual loading indicator overlay to image blocks for better feedback during image loading.
- **Improvements**
- Simplified and centralized image and attachment state management, reducing redundant properties and manual state tracking.
- Updated fallback UI for image blocks with clearer titles, descriptions, and improved layout.
- Enhanced batch image block creation and download handling for improved efficiency.
- Refined image block accessibility with improved alt text and streamlined rendering logic.
- Centralized target model selection for image insertion in AI actions.
- Reordered CSS declarations without affecting styling.
- Improved reactive state tracking for blob upload/download operations in mock server.
- **Bug Fixes**
- Improved cleanup of object URLs to prevent resource leaks.
- Adjusted toolbar logic to more accurately reflect available actions based on image state.
- **Tests**
- Updated end-to-end tests to match new UI text and behaviors for image loading and error states.
- **Chores**
- Refactored internal logic and updated comments for clarity and maintainability.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
* Unified loading icon
* Removed loading icon on image block
* Fixed color of circle on loading icon
<!-- This is an auto-generated comment: release notes by coderabbit.ai -->
## Summary by CodeRabbit
- **New Features**
- Icons in image fallback and loading states now automatically adapt to the current theme (light or dark mode) for a more consistent visual experience.
- **Style**
- Updated loading, success, and error icons to support theming and improved their color assignments for better visibility in different themes.
- **Refactor**
- Replaced static icon usage across several components with dynamic, theme-aware icons to ensure consistent appearance throughout the app.
- Removed static SVG icon exports and replaced them with theme-aware icon functions for improved maintainability.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
