fix(tabs): style regression when no icon is present (#2519)

* fix(tabs): style regression when no icon is present

* chore(tabs): add changeset

* chore(tabs): update changeset

---------

Co-authored-by: Benny Powers <bennypowers@users.noreply.github.com>

Author: zeroedin

.changeset/few-hotels-punch.md

@@ -0,0 +1,5 @@
+---
+"@patternfly/elements": patch
+---
+
+`<pf-tabs>`: fixed style regression on tab when a slotted icon is not present

elements/pf-tabs/pf-tab.css

@@ -127,6 +127,10 @@ button:active {
   display: flex !important;
 }
 
+[part="icon"][hidden] {
+  display: none !important;
+}
+
 :host([disabled][border-bottom="false"]) button,
 :host([aria-disabled="true"][border-bottom="false"]) button {
   --pf-c-tabs__link--before--BorderBottomWidth: 0;