chore(common): run unit tests for templates on CI

[eunjae-lee]

What?

This PR adds unit tests for templates on CI

Why?

JIRA: EXT-2080

How to test? (optional)

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Name	Status	Preview	Comments	Updated (UTC)
plugin-sandbox	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Dec 6, 2023 4:16pm

[eunjae-lee]

Current dependencies on/for this PR:

• main
  • PR #327
  • PR #328 👈

This stack of pull requests is managed by Graphite.

[eunjae-lee]

Merge activity

• Dec 6, 11:12 AM: @@eunjae-lee started a stack merge that includes this pull request via Graphite.
• Dec 6, 11:13 AM: Graphite rebased this pull request as part of a merge.
• Dec 6, 11:15 AM: @@eunjae-lee merged this pull request with Graphite.