feat(editor): unify block props api (#10888)

Closes: [BS-2707](https://linear.app/affine-design/issue/BS-2707/统一使用props获取和更新block-prop)

blocksuite/affine/blocks/block-image/src/components/image-block-fallback.ts

@@ -94,8 +94,8 @@ export class ImageBlockFallbackCard extends WithDisposable(ShadowlessElement) {
         : 'Image';
 
     const size =
-      !!model.size && model.size > 0
-        ? humanFileSize(model.size, true, 0)
+      !!model.props.size && model.props.size > 0
+        ? humanFileSize(model.props.size, true, 0)
         : null;
 
     return html`

blocksuite/affine/blocks/block-image/src/components/page-image-block.ts

@@ -249,7 +249,7 @@ export class ImageBlockPageComponent extends WithDisposable(ShadowlessElement) {
       };
     }
 
-    const { width, height } = this._model;
+    const { width, height } = this._model.props;
     if (!width || !height) {
       return {
         width: 'unset',