fix(popup): update width when placement is bottom (#2152)

Author: LeeJim

src/popup/popup.less

@@ -38,7 +38,7 @@
   &--bottom {
     bottom: 0;
     left: 0;
-    width: 100vw;
+    width: 100%;
     border-top-left-radius: @popup-border-radius;
     border-top-right-radius: @popup-border-radius;
     padding-bottom: constant(safe-area-inset-bottom);