[teraslice] fix multi-job deletion bug in force job stop

[busma13]

This PR makes the following changes:

• Ensure that K8s._deleteObjByExId() contains an object in objList.items[] before calling K8s.deleted().
• Throw if K8s.delete() receives a name argument that is undefined or an empty string.
• Refactor K8s._deleteObjByExId() to delete multiple objects and not handle force logic
• Refactor k8s.deleteExecution() to handleforcelogic by callingK8s._deleteObjByExId()` on multiple resources.
• bump teraslice from version 2.3.1 to 2.3.2
• pin the kind image used by k8s to: kindest/node:v1.28.12@sha256:fa0e48b1e83bb8688a5724aa7eebffbd6337abd7909ad089a2700bf08c30c6ea. Note that the version in the image tag refers to the kubernetes server version that will be used. We should keep this in sync with prod.

ref: #3750

[godber]

This will require rebasing and discussion.