Refactor container copy migration type selection from checkbox to radio buttons (#2307)

* replace migration type checkbox with radio button selection

* use force: true to bypass label interception

src/Explorer/ContainerCopy/containerCopyStyles.less

@@ -138,6 +138,14 @@
         color: var(--colorNeutralForeground1);
       }
     }
+    .migrationTypeDescription {
+      p {
+        color: var(--colorNeutralForeground1);
+      }
+      a {
+        color: var(--colorBrandForeground1);
+      }
+    }
   }
   .create-container-link-btn {
     padding: 0;
@@ -181,6 +189,9 @@
           background-color: var(--colorNeutralBackground3);
         }
       }
+      .ms-DetailsHeader-cellTitle {
+        padding-left: 20px;
+      }
     }
 
     .ms-DetailsRow {