Generated blob-columns methods are not considering entities with compound primary keys

• Type: Bug
• Status: Closed
• Resolution: Fixed
• Affects Version/s: Master
• Fix Version/s: 7.0.X, 7.1.X, 7.2.X, 7.3.0 CE GA1, 7.3.10 DXP GA1, 7.4.13 DXP GA1, Master
• Component/s: Core Infrastructure > Service Builder
• Labels: None
• Branch Version/s:
  7.2.x, 7.1.x, 7.0.x
• Backported to Branch:
  Committed
• Fix Priority: 3
• Git Pull Request: https://github.com/brianchandotcom/liferay-portal/pull/82833

After LPS-104539 changes, in case the entity has a Blob column, service builder generates a new method:

• open[BlobColumnName]InputStream(long primaryKey)

But we are not considering there are entities with compound primary keys, so in that case we should use "Serializable" type.