In sign videos , for some signs it shows 'Sign not available'

Issue Description : Sign videos are displayed with respect to tokens in sign translation field. if the sign and its video exists in dictionary or glossary it should be display . For some signs its shows ' sign not available' even though these signs exits in dictionary.

added 1.1.0-alpha.11 label

added Bug label

added In Progress/ Review label

assigned to @Anu.Monachan

mentioned in merge request !113 (merged)

added Review label and removed In Progress/ Review label

added 1.1.0-alpha.12 label

mentioned in merge request !118 (merged)

added QA label and removed Review label

assigned to @Jesni.Jose and unassigned @Anu.Monachan

Tested in https://bcs-isl-staging.web.app/ v1.1.0-alpha.12 | Api – 2.0.0.beta.10

Verified that sign videos available in dictionary are correctly updating in translation page .

Therefore moving this issue to done.

added Done label and removed QA label