Merge branch 'fix/page-section-block' into 'develop'

fix: [page] adding child blocks to section block

Co-authored-by: sup39 <dev@sup39.dev>

Closes #9530

See merge request firefish/firefish!10617

packages/client/src/pages/page-editor/els/page-editor.el.if.vue

@@ -66,6 +66,7 @@ const props = withDefaults(
 		},
 	},
 );
+props.value.children ??= [];
 
 const getPageBlockList = inject<(any) => any>("getPageBlockList");
 

packages/client/src/pages/page-editor/els/page-editor.el.section.vue

@@ -40,6 +40,7 @@ const props = withDefaults(
 		},
 	},
 );
+props.value.children ??= [];
 
 const getPageBlockList = inject<(any) => any>("getPageBlockList");