refactor: migrating to new topology custom metric

[anandtiwary]

Description

Please include a summary of the change, motivation and context.
refactor: migrating to new topology custom metric

Testing

Please describe the tests that you ran to verify your changes. Please summarize what did you test and what needs to be tested e.g. deployed and tested helm chart locally.

Checklist:

• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• Any dependent changes have been merged and published in downstream modules

Documentation

Make sure that you have documented corresponding changes in this repository or hypertrace docs repo if required.

[codecov]

Codecov Report

Merging #1000 (f1865d8) into main (a75a8f5) will increase coverage by 0.02%.
The diff coverage is 97.43%.

@@            Coverage Diff             @@
##             main    #1000      +/-   ##
==========================================
+ Coverage   85.03%   85.05%   +0.02%     
==========================================
  Files         821      820       -1     
  Lines       16838    16855      +17     
  Branches     2180     2190      +10     
==========================================
+ Hits        14318    14336      +18     
+ Misses       2489     2488       -1     
  Partials       31       31              

Impacted Files	Coverage Δ
...api-node-renderer/api-node-box-renderer.service.ts	100.00% <ø> (ø)
...node-renderer/backend-node-box-renderer.service.ts	85.71% <ø> (ø)
...node-renderer/service-node-box-renderer.service.ts	100.00% <ø> (ø)
...ology/node/box/entity-node-box-renderer.service.ts	80.23% <92.85%> (+1.32%)	⬆️
.../pages/apis/topology/application-flow.component.ts	66.66% <100.00%> (+16.66%)	⬆️
...raphql/observability-graphql-data-source.module.ts	100.00% <100.00%> (ø)
...ata/graphql/topology/topology-data-source.model.ts	97.05% <100.00%> (+0.39%)	⬆️
.../edge/curved/entity-edge-curve-renderer.service.ts	100.00% <100.00%> (ø)
...ets/topology/topology-widget-renderer.component.ts	98.03% <100.00%> (+0.12%)	⬆️
.../selections/observability-specification-builder.ts	53.68% <0.00%> (-10.53%)	⬇️
... and 5 more

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[github-actions]

Unit Test Results

    4 files  ±0  262 suites  ±0   15m 2s ⏱️ - 1m 12s
944 tests ±0  944 ✔️ ±0  0 💤 ±0  0 ❌ ±0 
951 runs  ±0  951 ✔️ ±0  0 💤 ±0  0 ❌ ±0 

Results for commit 185c6fd. ± Comparison against base commit a75a8f5.