In case of no image empty file is uploaded

[rhlc]

Issue in this hook:

frontend-main-app/src/components/Organisation/Banner/hooks.ts

Line 119 in 3584c2b

const useUpdateOrganisationImage = () => {

Details:
In case user doesn't select a image nothing should be uploaded to the S3 bucket via this hook. Currently an empty file is uploaded in case this hook is called without any file which isn't required.