Fix file extension validation

[sourabpramanik]

What does this PR do?

This PR fixes the file input upload extension validation in create function. First found in the create function step 2.

Test Plan

Manual test

Related PRs and Issues

Fixes #7362

Have you read the Contributing Guidelines on issues?

YES

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[stnguyen90]

Hmm, I tested this but was able to add an invalid file by dragging and dropping:

[sourabpramanik]

Interesting. I will look into this again and make required changes. Thanks for pointing that out ✌️

[sourabpramanik]

Hey @stnguyen90 , I see you are checking the storage file upload but this issue was not found in storage. It was found in create manual Function step 2. You can check the gif I added to the PR.

[stnguyen90]

@sourabpramanik here's the same in the create manual function wizard:

[sourabpramanik]

Hmm gotta check that again I was unable to reproduce this last time. Thanks for pointing that out.

[stnguyen90]

@sourabpramanik, any update on this?

[sourabpramanik]

@sourabpramanik, any update on this?

Yes done