Alignment with Carbon version 10.28 (#505)

* chore(deps-dev): remove @carbon/themes

* chore(deps-dev): bump devDependencies

* fix(tabs): forward click event to Tab

* feat(toggle): dispatch toggle event

* feat(tag): dispatch close event

* feat(tooltip-icon): make tooltipText slottable

* feat(dropdown): add hideLabel prop

* docs(select): add "Hidden label" example

* refactor(modal): use class directive

* feat(modal): dispatch transitionend event

* chore(deps-dev): upgrade carbon-components to 10.28.0-rc.0

* feat(date-picker): add warn state

* feat(tag): support small size variant

* fix(search): add semantic role

* feat(toolbar-search): add disabled state

* fix(composed-modal): add aria-label prop, update header semantic tags

* chore(deps-dev): upgrade carbon-components to v10.28

* docs(overflow-menu): add light variant example

* docs(link): document OutboundLink in Component API

* chore(tooltip-icon): rename slot to "tooltipText"

* docs(component-api): wrap code blocks to minimize width

* docs(aspect-ratio): remove inline outline style

* fix(tab): do not trigger focus when mounting

* docs(tabs): add reactive example

Closes #438

src/TooltipIcon/TooltipIcon.svelte

@@ -1,5 +1,8 @@
 <script>
-  /** Specify the tooltip text */
+  /**
+   * Specify the tooltip text.
+   * Alternatively, use the "tooltipText" slot
+   */
   export let tooltipText = "";
 
   /**
@@ -56,6 +59,8 @@
     hidden = false;
   }}"
 >
-  <span id="{id}" class:bx--assistive-text="{true}">{tooltipText}</span>
+  <span id="{id}" class:bx--assistive-text="{true}">
+    <slot name="tooltipText">{tooltipText}</slot>
+  </span>
   <slot />
 </button>