fix: devFlags for dashboard did not set correct values

[zdtsw]

Description

• priority for image:
  1. when set devFlag:
     devFlag > imageParam
  2. when not set devFlag:
     imageParam > default value during operator build time
• prioirty for url, title, groups:
  regardless set devFlags or not, always determinated by Platform value

https://issues.redhat.com/browse/RHOAIENG-10276

How Has This Been Tested?

local build: quay.io/wenzhou/opendatahub-operator-catalog:v2.15.10276

when DSC set to:

    dashboard:
      managementState: Managed

params.env is

admin_groups=odh-admins
odh-dashboard-image=<cpaas image>
dashboard-url=https://odh-dashboard-opendatahub.apps.rosa.wen-rosa-6.kuuz.p3.openshiftapps.com
section-title=OpenShift Open Data Hub

When DSC set to:

    dashboard:
      managementState: Managed
      devFlags:
        manifests:
          - contextDir: manifests
            uri: 'https://github.com/opendatahub-io/odh-dashboard/tarball/main'
    modelmeshserving: {}

params.env is

odh-dashboard-image=quay.io/opendatahub/odh-dashboard:main
dashboard-url=https://odh-dashboard-opendatahub.apps.rosa.wen-rosa-6.kuuz.p3.openshiftapps.com
section-title=OpenShift Open Data Hub
admin_groups=odh-admins

Screenshot or short clip

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• The developer has manually tested the changes and verified that the changes work

[openshift-ci]

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This pull-request has been approved by: andrewballantyne
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