style: 增加 modal-footer-content 样式

Author: ArgoZhang

src/BootstrapBlazor/Components/Modal/Modal.razor.scss

@@ -21,6 +21,18 @@
 
 .modal-footer {
     padding: 0.5rem 1rem;
+
+    .modal-footer-content {
+        flex-grow: 1;
+        min-width: 0;
+        width: 1%;
+        white-space: nowrap;
+        overflow: hidden;
+        display: flex;
+        align-items: center;
+        justify-content: flex-start;
+        margin-inline-end: 1rem;
+    }
 }
 
 .modal-footer > * {