fix(ui5-table-column): align content right in RTL (#2955)

FIXES: #2945

Author: ilhan007

packages/main/src/TableColumn.hbs

@@ -2,6 +2,7 @@
 	scope="col"
 	part="column"
 	role="columnheader"
+	dir="{{effectiveDir}}"
 >
 	<slot></slot>
 </th>

packages/main/src/themes/TableColumn.css

@@ -15,6 +15,10 @@ th {
 	vertical-align: middle;
 }
 
+th[dir="rtl"] {
+	text-align: right;
+}
+
 :host([first]) th {
 	padding-left: 1rem;
 }