Upload Container modal no longer warns if revision tag is already in use

[sanmont3drepo]

Description

Product issue: https://github.com/3drepo/3D-Repo-Product-Team/issues/636

The user does not receive a warning that a revision by that tag already exists when using the upload modal. I think it might stem from this PR #5229

• This is happening in: prod/staging/both
• This requires a hotfix to production: yes/no

Stakeholders

Steps to replicate

• Navigate to containers
• Click on "Upload files" (uploading a file by clicking on upload new revision on elipsis menu works)
• Add a file
• Set the destination of the file
• Change the revision tag to match one that already exists on that destination container

Current Behaviour

• No error is thrown.
• The user can attempt to upload the file which will fail

Expected Behaviour

• An error is thrown which disables the submit button

Pictures/ Gifs of the error