Revert "Follow naming conventions for resourceTemplates"

[savitaashture]

This reverts commit 447f613dd1731181e40ada3d9141548b45bbdb2c.

Reason:

Reverting this PR because altering the tag will impact the upgrade flow. The existing TriggerTemplate data with the old tag still persists in etcd. Consequently, during an upgrade with the new tag, the data isn't fetched for the trigger template as expected.

We'll revert this PR for now and reintroduce the change when we support the new ApiVersion. At that point, we'll utilize conversion functionality (convertTo and convertFrom) to ensure seamless transition. By incorporating the ApiVersion, we'll be able to adjust the tag accordingly.

Fixes: https://github.com/tektoncd/triggers/issues/1690

Changes

Submitter Checklist

As the author of this PR, please check off the items in this checklist:

• [ ] Has Docs if any changes are user facing, including updates to minimum requirements e.g. Kubernetes version bumps
• [ ] Has Tests included if any functionality added or changed
• [ ] Follows the commit message standard
• [ ] Meets the Tekton contributor standards (including functionality, content, code)
• [ ] Has a kind label. You can add one by adding a comment on this PR that contains /kind <type>. Valid types are bug, cleanup, design, documentation, feature, flake, misc, question, tep
• [ ] Release notes block below has been updated with any user facing changes (API changes, bug fixes, changes requiring upgrade notices or deprecation warnings). See some examples of good release notes.
• [ ] Release notes contains the string "action required" if the change requires additional action from users switching to the new release

Release Notes

NONE

[khrm]

Please write in release note also.

/kind bug

[khrm]

Also, update the release and mention this in Release of v0.26.0

[dibyom]

/approve

[tekton-robot]

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[savitaashture]

/cherry-pick release-v0.26.x

[tekton-robot]

@savitaashture: new pull request created: #1694

In response to [this](https://github.com/tektoncd/triggers/pull/1693#issuecomment-1934563277): >/cherry-pick release-v0.26.x Instructions for interacting with me using PR comments are available [here](https://git.k8s.io/community/contributors/guide/pull-requests.md). If you have questions or suggestions related to my behavior, please file an issue against the [kubernetes/test-infra](https://github.com/kubernetes/test-infra/issues/new?title=Prow%20issue:) repository.

[savitaashture]

Also, update the release and mention this in Release of v0.26.0

@khrm i have updated https://github.com/tektoncd/triggers/releases/tag/v0.26.0 PTAL