refactor: Fix unsupported platform `web` in pub.dev

[mbfakourii]

Pull Request

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• Any contribution is under this license.
• Link this pull request to an issue.

Issue

fix unsupported platform web in pub.dev

Closes: #781

Approach

n/a

Tasks

• [ ] Add tests
• [ ] Add changes to documentation (guides, repository pages, code comments)

[parse-github-assistant[bot]]

Thanks for opening this pull request!

[codecov[bot]]

Codecov Report

Patch and project coverage have no change.

Comparison is base (63fb586) 39.50% compared to head (4aee899) 39.50%.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #929 +/- ## ======================================= Coverage 39.50% 39.50% ======================================= Files 60 60 Lines 3339 3339 ======================================= Hits 1319 1319 Misses 2020 2020 ```

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[mbfakourii]

@parse-community/flutter-sdk-review

It is possible to check, it seems ready to merge

[mbfakourii]

@Nidal-Bakir Do you think it's ready to merge?

[Nidal-Bakir]

Surely it is.