[Fleet]: Standalone Agent Upgrade Commands not displayed for Non-macOS

[harshitgupta-qasource]

Description:
Upgrade standalone agents section only displays macOS upgrade commands. Upgrade commands for other operating systems are missing.

Link:
https://www.elastic.co/docs/reference/fleet/upgrade-standalone

Screen-shot:

Whats working fine

• Installation commands are available for all operating systems.

Expected Result
Upgrade commands for standalone agents should be available for all supported operating systems/artifacts.

[harshitgupta-qasource]

@muskangulati-qasource Kindly review

[muskangulati-qasource]

Secondary review is Done for this ticket!