fix: fix memory leak caused when disconnecting floating-ui (#12107)

**Related Issue:** #10648 

## Summary

Addresses a memory leak where floating-ui cleanup was not invoked when
the component had missing elements. Tear down should always occur if it
was previously registered, regardless of component state.

Our test environment doesn't cover memory profiling, so no tests were
added.

Author: jcfranco

packages/calcite-components/src/utils/floating-ui.ts

@@ -581,12 +581,6 @@ export async function connectFloatingUI(component: FloatingUIComponent): Promise
  * @param component - A floating-ui component.
  */
 export function disconnectFloatingUI(component: FloatingUIComponent): void {
-  const { floatingEl, referenceEl } = component;
-
-  if (!floatingEl || !referenceEl) {
-    return;
-  }
-
   const trackedState = autoUpdatingComponentMap.get(component);
 
   if (trackedState?.state === "active") {