Package upgrade breaks translation for global value set

Create a managed package with translations for the global value set.

1. On a Developer org, create a Global Value Set.
2. Add a few picklist values to the GVS.
3. Create a Custom field on any Standard/Custom object using the Global Value Set.
4. Add the GVS to a package and upload the package.
5. Install the package on a subscriber org.

After installing the package in the subscriber org upgrade the package to validate the behaviour by following the below steps

Reproducible Steps:

1. Navigate to: Setup → Translation Workbench → Translate
2. Select:
   1. Language: Select the translated language while creating package
   2. Component: Global Value Set
3. Locate:
   1. Global Value Set: 
   2. Value: Picklist value
4. Update translation label to: package translation value or custom translation value→ Save
5. Upgrade package (same or higher version)
6. Update translation 'picklist value' value to: Blank → Save
   
   It will be enforced with package translation value rather than Blank as we updated in the previous step.