fix: remove unnecessary bold in sidebar tabs

Author: devvaannsh

src/styles/Extn-SidebarTabs.less

@@ -69,10 +69,6 @@
     &.active {
         color: @project-panel-text-1;
         background-color: rgba(255, 255, 255, 0.09);
-        // Heavier weight on the active tab so the selected state
-        // doesn't rely on color alone — strengthens the affordance
-        // without changing the silhouette.
-        font-weight: 600;
         box-shadow:
             0 1px 0 rgba(255, 255, 255, 0.05) inset,
             0 1px 2px rgba(0, 0, 0, 0.2);