Remove the fallback to use generation in ComponentDescriptorCache key

[nesmabadr]

Description

Currently we use the module version from the annotation added in the ModuleTemplate as part of the ComponentDescriptorCache key. If the annotation is not found we fall back to using the generation instead. After all ModuleTemplates have the module version annotation, we need to remove this fallback logic.
This is a followup item for #929

ACs:

• Check whether all the module templates have correct annotation
• Remove the fallback logic to use generation as part of the componentDescriptorCache key once all ModuleTemplates have the module version annotation

[janmedrek]

Version should be added as a specific field in the ModuleTemplate, until then it is blocked.

[janmedrek]

Related to versions in the Module Catalogue: #1472