tab bar: invalidate on resize to avoid gaps on the RHS

docs/changelog.md

@@ -37,6 +37,7 @@ As features stabilize some brief notes about them will accumulate here.
 * win32 input mode: fixed encoding of backspace and delete keys. Thanks to [@kreudom](https://github.com/kreudom)! [#2233](https://github.com/wez/wezterm/pull/2233)
 * Tab bar could glitch and show incorrect contents when adjusting for monitor or changed font scaling [#2208](https://github.com/wez/wezterm/issues/2208)
 * Wayland: transparent gap under tab bar when window is transparent, split and using per-pane color schemes [#1620](https://github.com/wez/wezterm/issues/1620)
+* Tab bar could show a gap to the right when resizing
 
 #### Updated
 * Bundled harfbuzz to 4.4.1

wezterm-gui/src/termwindow/resize.rs

@@ -260,6 +260,7 @@ impl super::TermWindow {
                 tab.resize(size);
             }
         };
+        self.invalidate_fancy_tab_bar();
         self.update_title();
 
         // Queue up a speculative resize in order to preserve the number of rows+cols