Update allocationReport.js

[JORDAN-RYAN1]

What does this PR change?

• Updates the Allocation Report UI to include the namespace when displaying the resource name.
• Now shows names in the format: namespace:controller:podname (or namespace:resource).

Does this PR relate to any other PRs?

• No, this is a standalone fix.

How will this PR impact users?

• Users can now differentiate same-named deployments, pods, or services across different namespaces in the Allocations view.
• Improves cost reporting clarity for multi-tenant Kubernetes clusters.

Does this PR address any GitHub or Zendesk issues?

• Closes #1964 — "Include namespace in UI/metrics"

How was this PR tested?

• Ran frontend locally using npm start.
• Verified that allocation rows now show namespace:resource format correctly.
• Verified fallback behavior — if namespace is missing, display only the resource name.

Does this PR require changes to documentation?

• No changes needed. This is a UI display enhancement only.

Have you labeled this PR and its corresponding Issue as "next release" if it should be part of the next OpenCost release? If not, why not?

• No, this is a minor UI improvement and can be merged under normal releases without special labeling.

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[joao-pimentel-randoli]

Hi there, thank you for your contribution!
Maybe there's something wrong in the deployment preview, but on that link I only see the namespaces being added to the Namespace breakdown, which is not useful bcs the namespace breakdown already displays the namespace name:

In the other breakdowns, the namespace is not being displayed. Example (pod breakdown):

Also, as noted by Matt on the original issue, the namespace is already displayed if the user specifies multi-aggregation with namespace. Example: breakdown by controller and namespace https://demo.infra.opencost.io/?agg=namespace,controller

Please note that if the namespace is not included in the aggregation, the response may have entries running on multiple namespaces (ex: the same deployment name may be running in multiple namespaces)