BB-854: fix(editor): Enter key submission for Author Credit and right click context menu in entity search fields

[atharvsp02]

Problem

Ticket: BB-854

In the Author Credit field pressing Enter after selecting an author did not submit the form and Right clicking inside the field did not show the browsers context menu, making it impossible to paste a BBID with a mouse

Solution

• Removed blurInputOnSelect prop from EntitySearchFieldOption because it removed focus from the field after selecting an author, preventing Enter from submitting the form. The blur() for the BBID paste workflow is unchanged.
• Added text-field-menu CSS class and flexbox so the <input> element expands to fill the empty area of the field, enabling the browsers right click context menu.

Areas of Impact

• EntitySearchFieldOption.js - removed blurInputOnSelect, added text-field-menu class
• style.scss - added scoped CSS under .text-field-menu
• Fix applies to all entity search dropdowns (Author Credit, Publisher, Relationship, Edition Group, Series, Area etc.) so right-click paste now works across all of them

Screenshots

Before

After

[atharvsp02]

Hi @MonkeyDo ,
After a successful BBID paste, this.selectRef.current.blur() removes focus from the field, so Enter key submission will not work at that point. Should this be handled differently?

[atharvsp02]

@MonkeyDo , I also wanted to ask after this fix the Author Credit field no longer stretches when very long text is typed, it scrolls inside the field instead. Should the original behaviour be preserved?