refactor(tab-bar): remove ionic vars file, move vars to global theme file

Author: brandyscarney

core/src/components/tab-bar/tab-bar.ionic.scss

@@ -1,13 +1,13 @@
 @use "../../themes/ionic/ionic.globals.scss" as globals;
 @use "./tab-bar.common";
-@import "./tab-bar.ionic.vars";
 
 :host {
-  --background: #{$tabbar-ionic-background};
-  --background-activated: #{$tabbar-ionic-background-activated};
-  --background-focused: #{$tabbar-ionic-background-focused};
-  --color: #{$tabbar-ionic-color};
-  --color-selected: #{$tabbar-ionic-color-selected};
+  --background: #{globals.$tabbar-ionic-background};
+  --background-activated: #{globals.$tabbar-ionic-background-activated};
+  --background-focused: #{globals.$tabbar-ionic-background-focused};
+  --border: #{globals.$ion-border-size-0} #{globals.$ion-border-style-solid} #{globals.$tabbar-ionic-border-color};
+  --color: #{globals.$tabbar-ionic-color};
+  --color-selected: #{globals.$tabbar-ionic-color-selected};
 
   /**
    * Tab bar has a box sizing of content-box to ensure the padding

core/src/components/tab-bar/tab-bar.ionic.vars.scss

@@ -1,4 +1,5 @@
 @use "../functions.color" as color;
+@use "../../foundations/ionic.vars.scss" as globals;
 
 // Ionic Theme
 // -------------------------------------------------------------------------------------------
@@ -89,3 +90,13 @@ $ionic-colors: (
     tint: color.get-color-tint($dark),
   ),
 );
+
+// Ionic Tabs & Tab Bar
+// --------------------------------------------------
+
+$tabbar-ionic-background: var(--ion-tab-bar-background, globals.$ion-primitives-base-white);
+$tabbar-ionic-background-activated: var(--ion-tab-bar-background-activated, globals.$ion-primitives-neutral-100);
+$tabbar-ionic-background-focused: var(--ion-tab-bar-background-focused, transparent);
+$tabbar-ionic-color: var(--ion-tab-bar-color, globals.$ion-primitives-neutral-800);
+$tabbar-ionic-color-selected: var(--ion-tab-bar-color-selected, globals.$ion-semantics-primary-base);
+$tabbar-ionic-border-color: var(--ion-tab-bar-border-color, transparent);