Proposed changes

This PR ensures that file uploads are not blocked due to spaces in the allowList string.

Issue(s)

https://rocketchat.atlassian.net/browse/NATIVE-941

How to test or reproduce

• on workspace settings go to File Upload > Allowed File Types and add the allowed list below:

application/msword, application/vnd.openxmlformats-officedocument.wordprocessingml.document, application/vnd.ms-excel, application/vnd.openxmlformats-officedocument.spreadsheetml.sheet, application/vnd.ms-powerpoint, application/vnd.openxmlformats-officedocument.presentationml.presentation, application/vnd.oasis.opendocument.text, application/pdf, image/jpeg, image/png, text/plain, image/gif, image/heif, image/*, image/heic, image/pjpeg, image/x-png

• Open the app;
• Go to room;
• Try to take a photo and send on iOS;

Screenshots

Types of changes

• Bugfix (non-breaking change which fixes an issue)
• Improvement (non-breaking change which improves a current function)
• New feature (non-breaking change which adds functionality)
• Documentation update (if none of the other choices apply)

Checklist

• I have read the CONTRIBUTING doc
• I have signed the CLA
• Lint and unit tests pass locally with my changes
• I have added tests that prove my fix is effective or that my feature works (if applicable)
• I have added necessary documentation (if applicable)
• Any dependent changes have been merged and published in downstream modules

Further comments