feat(ui5-shellbar): introduce async search btn getter

[dobrinyonkov]

The searchButtonDomRef has been refactored into an asynchronous method getSearchButtonDomRef that waits for the component to finish rendering. This ensures the DOM is available for use cases that require focusing the search button.

A similar code has been applied to the search-field-toggle event, which is now fired after rendering is complete.

[Copilot]

Pull Request Overview

This PR refactors the asynchronous handling of the search button by replacing the synchronous getter with an async method and updating event handling to ensure the DOM is fully rendered when focused.

• Changed the synchronous searchButtonDomRef getter to an asynchronous getSearchButtonDomRef method.
• Updated event listeners in test pages to wait for rendering and focus the appropriate elements.

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
packages/fiori/test/pages/ShellBar_evolution.html	Adjusted event listener logic to wait for the search-field-toggle.
packages/fiori/src/ShellBar.ts	Replaced the synchronous DOM ref getter with an asynchronous method.

Comments suppressed due to low confidence (2)

packages/fiori/src/ShellBar.ts:1062

• [nitpick] Update the JSDoc comments to reflect that this method is asynchronous and returns a Promise, ensuring consistency between the documentation and its behavior.

async getSearchButtonDomRef(): Promise<HTMLElement | null> {

packages/fiori/test/pages/ShellBar_evolution.html:306

• Consider verifying that registering the 'ui5-search-field-toggle' listener inside the 'ui5-search-button-click' handler is the intended design, as it may lead to unexpected multiple registrations if the click event is fired repeatedly before the inner listener has been invoked.

shellbar_hide_search.addEventListener('ui5-search-field-toggle', async (e) => {

[ui5-webcomponents-bot]

🎉 This PR is included in version v2.10.0-rc.1 🎉

The release is available on v2.10.0-rc.1

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