fix(ai-navigator): Add missing defaults directory and manifests

[gracedo]

What problem does this PR solve?:
Enabling ai-navigator was causing kustomization errors due to missing defaults/ dir and manifests.

kommander                     ai-navigator-app-0.1.0-defaults             46m   False     kustomization path not found: stat /tmp/kustomization-2697881657/services/ai-navigator-app/0.1.0/defaults: no such file or directory

Which issue(s) does this PR fix?:

https://d2iq.atlassian.net/browse/D2IQ-99374

Special notes for your reviewer:

Tested this fix on the daily and saw the kustomization resolve successfully

k get kustomizations -n kommander -w | grep navigator
ai-navigator-app                            93m   True      Applied revision: main@sha1:06df51eb92b7d8c8f6973385dd5c64f09efd893d
ai-navigator-app-0.1.0-defaults             93m   False     kustomization path not found: stat /tmp/kustomization-3714011164/services/ai-navigator-app/0.1.0/defaults: no such file or directory

ai-navigator-app-0.1.0-defaults             94m   Unknown   Reconciliation in progress
ai-navigator-app-0.1.0-defaults             94m   Unknown   Reconciliation in progress
ai-navigator-app-0.1.0-defaults             94m   Unknown   Reconciliation in progress
ai-navigator-app-0.1.0-defaults             94m   Unknown   Reconciliation in progress
ai-navigator-app-0.1.0-defaults             94m   True      Applied revision: main@sha1:7c141d7635cd25f20ad187b49f3ce9bae618b867
ai-navigator-app-0.1.0-defaults             94m   True      Applied revision: main@sha1:7c141d7635cd25f20ad187b49f3ce9bae618b867
ai-navigator-app                            94m   Unknown   Reconciliation in progress
ai-navigator-app                            94m   Unknown   Reconciliation in progress
ai-navigator-app                            94m   Unknown   Reconciliation in progress
ai-navigator-app                            94m   Unknown   Reconciliation in progress
ai-navigator-app                            94m   Unknown   Reconciliation in progress
ai-navigator-app                            94m   Unknown   Reconciliation in progress
ai-navigator-app                            94m   True      Applied revision: main@sha1:7c141d7635cd25f20ad187b49f3ce9bae618b867
ai-navigator-app                            94m   True      Applied revision: main@sha1:7c141d7635cd25f20ad187b49f3ce9bae618b867
ai-navigator-app-0.1.0-defaults             94m   Unknown   Reconciliation in progress
ai-navigator-app-0.1.0-defaults             94m   Unknown   Reconciliation in progress
ai-navigator-app-0.1.0-defaults             94m   Unknown   Reconciliation in progress
ai-navigator-app-0.1.0-defaults             94m   True      Applied revision: main@sha1:7c141d7635cd25f20ad187b49f3ce9bae618b867

Does this PR introduce a user-facing change?:

Checklist

• If the PR adds a version bump, ensure there is no breaking change in Licensing model (or NA).
• If a chart is changed or app configuration is significantly changed, the chart version is correctly incremented (so that apps are not automatically upgraded from a previous version of DKP).

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[msdolbey]

👍

[gracedo]

@d2iq-mergebot backport main