Count all errors in the example coverage tracker

[t0yv0]

There is an anomaly in the stats in pulumi/pulumi-azuread#484 where YAML has fewer examples counted in the denominator than other languages, this should be impossible. Looks like some error handling assumptions do not apply to PULUMI_CONVERT=1 anymore and was swallowing errors.

With this small tweak the errors for the failed examples now show up in the coverage tracker:

warning: failed to convert HCL for #/functions/azuread:index/getDomains:getDomains to yaml: :3,11-43: Failed to generate YAML program: Splat; A 'Splat' expression is equivalent in expressive power to a 'for loop', and is not representable in YAML.
If the values of the function are known, you can manually unroll the loop, otherwise it is necessary to switch to a more expressive language., and 1 other diagnostic(s)

[codecov]

Codecov Report

Attention: Patch coverage is 25.00000% with 18 lines in your changes are missing coverage. Please review.

Project coverage is 59.09%. Comparing base (47fa9ff) to head (80c541f).
Report is 88 commits behind head on master.

Files	Patch %	Lines
pkg/tfgen/docs.go	25.00%	16 Missing and 2 partials ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1713      +/-   ##
==========================================
- Coverage   59.54%   59.09%   -0.46%     
==========================================
  Files         295      306      +11     
  Lines       41462    42296     +834     
==========================================
+ Hits        24690    24995     +305     
- Misses      15382    15869     +487     
- Partials     1390     1432      +42     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.