fix function return type

[maslii]

Description (*)

Function getLastPageNumber supposed to return Integer type, but actual result most of the time is of type Float.

Manual testing scenarios (*)

1. Any usage of method getLastPageNumber of Framework/Data/Collection class.

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 are green)

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[magento-cicd2]

All committers have signed the CLA.

[magento-engcom-team]

Hi @swnsma, thank you for the review.
ENGCOM-5628 has been created to process this Pull Request

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@maslii thank you for contributing. Please accept Community Contributors team invitation here to gain extended permissions for this repository.

[magento-engcom-team]

Hi @VladimirZaets, thank you for the review.
ENGCOM-5628 has been created to process this Pull Request

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