(bug) skip unknown sheets on chunk reading fixes #4281

[pusherman]

Please take note of our contributing guidelines: https://docs.laravel-excel.com/3.1/getting-started/contributing.html Filling out the template is required. Any pull request that does not include enough information to be reviewed in a timely manner may be closed at the maintainers' discretion.

1️⃣ Why should it be added? What are the benefits of this change? Resolves the bug mentioned in #4281

2️⃣ Does it contain multiple, unrelated changes? Please separate the PRs out. No

3️⃣ Does it include tests, if possible? No

4️⃣ Any drawbacks? Possible breaking changes? No

5️⃣ Mark the following tasks as done:

• [x] Checked the codebase to ensure that your feature doesn't already exist.
• [x] Take note of the contributing guidelines.
• [x] Checked the pull requests to ensure that another person hasn't already submitted a fix.
• [x] Added tests to ensure against regression.

6️⃣ Thanks for contributing! 🙌

[ismoil-nosr]

@patrickbrouwers Hi, we need your approval on this, please merge this fix because it's really critical issue.

[patrickbrouwers]

This PR requires a unit test for me to able to look into this PR. Without it, I can't comfortably merge this.

[stale[bot]]

This bug report has been automatically closed because it has not had recent activity. If this is still an active bug, please comment to reopen. Thank you for your contributions.

[pusherman]

I'll just delete this PR.

[patrickbrouwers]

If you don't plan on adding the requested unit test, I guess I won't have to reopen it then.