fix(dialog, modal, popover, sheet): fixes an issue that caused extra containers to be lost after internal trap updates (#11556)

**Related Issue:** #11523 

## Summary

#11548 missed calling
the internal update focus trap method, using the public method instead,
which clears user-specified `extraContainers`.

Author: jcfranco

packages/calcite-components/src/components/dialog/dialog.tsx

@@ -780,7 +780,7 @@ export class Dialog extends LitElement implements OpenCloseComponent, LoadableCo
   }
 
   private handleMutationObserver(): void {
-    this.updateFocusTrapElements();
+    this.focusTrap.updateContainerElements();
   }
 
   // #endregion

packages/calcite-components/src/components/modal/modal.tsx

@@ -92,7 +92,7 @@ export class Modal extends LitElement implements OpenCloseComponent, LoadableCom
   private modalContent = createRef<HTMLDivElement>();
 
   private mutationObserver: MutationObserver = createObserver("mutation", () =>
-    this.updateFocusTrapElements(),
+    this.focusTrap.updateContainerElements(),
   );
 
   private _open = false;

packages/calcite-components/src/components/popover/popover.tsx

@@ -97,7 +97,7 @@ export class Popover
   private hasLoaded = false;
 
   private mutationObserver: MutationObserver = createObserver("mutation", () =>
-    this.updateFocusTrapElements(),
+    this.focusTrap.updateContainerElements(),
   );
 
   transitionProp = "opacity" as const;

packages/calcite-components/src/components/sheet/sheet.tsx

@@ -591,7 +591,7 @@ export class Sheet extends LitElement implements OpenCloseComponent, LoadableCom
   }
 
   private handleMutationObserver(): void {
-    this.updateFocusTrapElements();
+    this.focusTrap.updateContainerElements();
   }
 
   // #endregion