chore(init): skip including dynamic packages if file not exists

[dzemanov]

Description

Skip including dynamic packages if file does not exist, as it will be created the first time by extensions with this config:

plugins: []

Which issue(s) does this PR fix

• Fixes https://issues.redhat.com/browse/RHIDP-8103

PR acceptance criteria

Please make sure that the following steps are complete:

• GitHub Actions are completed and successful
• Unit Tests are updated and passing
• E2E Tests are updated and passing
• Documentation is updated if necessary (requirement for new features)
• Add a screenshot if the change is UX/UI related

How to test changes / Special notes to the reviewer

[openshift-ci]

Skipping CI for Draft Pull Request.
If you want CI signal for your change, please convert it to an actual PR.
You can still manually trigger a test run with /test all

[github-actions]

The image is available at:

• quay.io/rhdh-community/rhdh:pr-3120 or
• quay.io/rhdh-community/rhdh:pr-3120-af9313fc

[kadel]

When someone makes a typo in a filename, it is easy to miss that message. I would prefix it with WARNING to make it more visible.

otherwise LGTM

[kadel]

/lgtm
/approve

[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: AndrienkoAleksandr, kadel

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[github-actions]

The image is available at:

• quay.io/rhdh-community/rhdh:pr-3120 or
• quay.io/rhdh-community/rhdh:pr-3120-a9c1597d

[dzemanov]

/cherry-pick release-1.7

[openshift-cherrypick-robot]

@dzemanov: new pull request created: #3145

In response to this:

/cherry-pick release-1.7

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