feat: rename "Screen Options" to "Display Options"

[coderGtm]

This pull request updates the terminology across the WordPress admin codebase, replacing "Screen Options" with "Display Options" for consistency and clarity in both user-facing text and internal documentation. The changes affect JavaScript, PHP, and CSS files, as well as help text, comments, accessibility announcements, and privacy policy documentation.

User-facing text and accessibility updates:

• All references to "Screen Options" in UI strings, help text, and accessibility announcements have been changed to "Display Options" throughout the admin dashboard, post/page editors, and related screens. [1] [2] [3] [4] [5] [6] [7] [8] [9]

Documentation and code comments:

• Inline comments, function descriptions, and documentation blocks referencing "Screen Options" have been updated to "Display Options" in both JavaScript and PHP files, including class properties and method descriptions. [1] [2] [3] [4] [5] [6] [7] [8] [9] [10]

CSS class and section comments:

• CSS comments and section headers have been updated to reflect the new terminology, ensuring style definitions and documentation are consistent with the new wording. [1] [2] [3] [4] [5] [6]

Privacy policy and cookies:

• The privacy policy text now refers to "display options cookies" instead of "screen options cookies" to match the new terminology.

These changes ensure a unified experience and reduce confusion for users and developers by standardizing the term "Display Options" throughout the WordPress admin interface and codebase.

Trac ticket: https://core.trac.wordpress.org/ticket/39852

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