feat: Add multi RM name to K8s

[gt2345]

Description

Display resource manager names (only if there are multiple) for K8s resource pool cards.

Test Plan

For a cluster of K8s, configure multiple resource managers, the resource pool cards should display the resource manager names.

Commentary (optional)

Checklist

• Changes have been manually QA'd
• User-facing API changes need the "User-facing API Change" label.
• Release notes should be added as a separate file under docs/release-notes/.
  See Release Note for details.
• Licenses should be included for new code which was copied and/or modified from any external code.

Ticket

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[codecov]

Codecov Report

Attention: Patch coverage is 0% with 2 lines in your changes are missing coverage. Please review.

Project coverage is 42.76%. Comparing base (978a02e) to head (7b82f4a).

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #8993      +/-   ##
==========================================
- Coverage   47.49%   42.76%   -4.74%     
==========================================
  Files        1168      848     -320     
  Lines      176315   137041   -39274     
  Branches     2353     2351       -2     
==========================================
- Hits        83740    58601   -25139     
+ Misses      92417    78282   -14135     
  Partials      158      158              

Flag	Coverage Δ
harness	?
web	42.83% <0.00%> (-0.01%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files	Coverage Δ
webui/react/src/components/ResourcePoolCard.tsx	43.77% <0.00%> (-0.17%)	⬇️

... and 320 files with indirect coverage changes