[js-api-parser] The generated output doesn't have "PackageVersion"

- The generated output from the JS API view parser doesn't have `PackageVersion`. Since it expects the input filename to have a package version as part of the filename. Look at `getPackageVersion` function in `tools/apiview/parsers/js-api-parser/src/export.ts`
- Additionally, user reported issues are that the package version doesn't show up in the generated API view. Sometimes it either picks up the incorrect version (probably, last generated API view?) and not from the latest one from main or the current PR.