Fix search cost unit test

[CascadingRadium]

• Fix the BytesRead and BytesStored unit tests to pass when using the vectors tag. The following commands can be used to validate that all UTs now pass.
  • go test -tags=vectors -race ./...
  • go test -race ./...

[abhinavdangeti]

My recommendation here is we simply drop these cost checks or the entire unit tests even and not over-engineer anything here.

Numbers such as 21639 or whatever don't mean anything in the tests's context.

[CascadingRadium]

the test has been failing for many months now ...
mainly its because the SectionVectorIndex is locked under the
vectors build tag so without the tag only 1 section is there

i am not sure if there is a better way to validate the cost
other than a hard coded value...