[Backport] fixed Notification page Select Visible items issue

[shikhamis11]

Original Pull Request

#19302
Fixed issue - #19285
On Notification page Select All and Select Visible both works same

Description (*)

Fixed issue #19285 On Notification page Select All and Select Visible both works same

Fixed Issues (if relevant)

#19285 On Notification page Select All and Select Visible both works same

Manual testing scenarios (*)

1. Login to Magento Admin.
2. Select Notifications (Bell Icon from right top of the screen).
3. Click on "See All".
4. Default paging is set to 20 rows per page.
5. Make sure you have more than 20 notifications so that you can have paging available and some notification are on next pages.
6. Now from Mass Action dropdown select "Select All" action. This will select only visible notifications (currently 20, as 20 rows per page is setup) instead of all available records.

Contribution checklist (*)

• Pull request has a meaningful description of its purpose
• All commits are accompanied by meaningful commit messages
• All new or changed code is covered with unit/integration tests (if applicable)
• All automated tests passed successfully (all builds on Travis CI are green)

[magento-engcom-team]

Hi @shikhamis11. Thank you for your contribution
Here is some useful tips how you can test your changes using Magento test environment.
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[VladimirZaets]

Hi @shikhamis11, thanks for collaboration. Please update phpdocs declaration how it was updated in the original PR.

[shikhamis11]

@VladimirZaets I have updated changes please check

[magento-engcom-team]

Hi @sidolov, thank you for the review.
ENGCOM-3777 has been created to process this Pull Request

[ghost]

Hi @shikhamis11, thank you for your contribution!
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[magento-engcom-team]

Hi @shikhamis11. Thank you for your contribution.
We will aim to release these changes as part of 2.2.8.
Please check the release notes for final confirmation.

Please, consider to port this solution to 2.3 release line.
You may use Porting tool to port commits automatically.