Fix code coverage paths

[dyladan]

Code coverage paths were pointing to the experimental/tsconfig.json file which no longer exists. They should use the base tsconfig.json as the project root. This is causing some issues with our coverage script detecting bad coverage changes and not being able to locate files properly.

[codecov]

Codecov Report

Merging #2913 (5ef1177) into main (96465c5) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main    #2913   +/-   ##
=======================================
  Coverage   93.73%   93.73%           
=======================================
  Files         187      187           
  Lines        6145     6145           
  Branches     1308     1308           
=======================================
  Hits         5760     5760           
  Misses        385      385           

Impacted Files	Coverage Δ
...-otlp-http/src/platform/node/OTLPMetricExporter.ts
...s/exporter-trace-otlp-http/src/OTLPExporterBase.ts
...y-sdk-metrics-base/src/state/AsyncMetricStorage.ts
...orter-metrics-otlp-proto/src/OTLPMetricExporter.ts
.../opentelemetry-api-metrics/src/api/global-utils.ts
packages/exporter-trace-otlp-proto/src/util.ts
...entelemetry-sdk-metrics-base/src/view/Predicate.ts
packages/exporter-trace-otlp-proto/src/types.ts
...mentation-xml-http-request/src/enums/EventNames.ts
...metry-sdk-metrics-base/src/aggregator/Histogram.ts
... and 202 more