Allow elements with data-everclickmodal to trigger Everblock modal

[CySSoO]

Motivation

• The click handler only reacted to elements with the .everblock-modal-button class, preventing elements that only have the data-everclickmodal attribute from opening the modal.
• Make it possible to trigger the Everblock modal from any element that declares data-everclickmodal without requiring a specific CSS class.

Description

• Changed the delegated click selector in views/js/everblock.js from '.everblock-modal-button' to '.everblock-modal-button, [data-everclickmodal]'.
• The existing modal data handling (data-everclickmodal, data-evercms, data-evermodal) and AJAX flow are left unchanged to preserve current behavior.

Testing

• No automated tests were run for this change.

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Codex Task