Fix: Problem with table headers and dates moving from 0.9.25 to 0.9.27 (

buefy#3971) (buefy#3986)

* fix(lib): percentage width on columns doubly applied

- Fixes the issue that column widths were doubly applied when they were
  given in percentage ('%'). Interestingly, percentage widths have
  effect on `<th>` elements in contrast to absolute values; e.g., 200px.
  So we won't apply the column widths given in percentage to `.th-wrap`
  elements to prevent widths from being doubly applied.

issue buefy#3971

packages/buefy-next/src/components/table/TableColumn.vue

@@ -64,7 +64,14 @@ export default {
             return style
         },
         thWrapStyle() {
-            return this.style
+            const width = toCssWidth(this.width)
+            // interestingly, percentage width on the th element has effect
+            // so we won't apply it to .th-wrap
+            if (width != null && !width.trim().endsWith('%')) {
+                return { width }
+            } else {
+                return {}
+            }
         },
         rootClasses() {
             return [this.cellClass, {