fix(plugin-coverage): prevent invalid coverage when lcov has hit > found

[matejchalk]

The pytest LCOV report can produce records with a higher hit than found, which results in an invalid coverage percentage 😅

[github-actions]

Code PushUp

🤨 Code PushUp report has both improvements and regressions – compared current commit ed8331e with previous commit f57c035.

🕵️ See full comparison in Code PushUp portal 🔍

🏷️ Categories

🏷️ Category	⭐ Previous score	⭐ Current score	🔄 Score change
Performance	🟡 51	🔴 48
Code coverage	🟢 91	🟢 91	–
Security	🟡 61	🟡 61	–
Updates	🟡 77	🟡 77	–
Accessibility	🟢 92	🟢 92	–
Best Practices	🟢 100	🟢 100	–
SEO	🟡 61	🟡 61	–
Type Safety	🟢 100	🟢 100	–
Bug prevention	🟢 100	🟢 100	–
Miscellaneous	🟢 100	🟢 100	–
Code style	🟢 100	🟢 100	–
Documentation	🔴 23	🔴 23	–

👎 1 group regressed, 👍 2 audits improved, 👎 4 audits regressed, 10 audits changed without impacting score

🗃️ Groups

🔌 Plugin	🗃️ Group	⭐ Previous score	⭐ Current score	🔄 Score change
Lighthouse	Performance	🟡 51	🔴 48

20 other groups are unchanged.

🛡️ Audits

🔌 Plugin	🛡️ Audit	📏 Previous value	📏 Current value	🔄 Value change
Lighthouse	Initial server response time was short	🟥 Root document took 600 ms	🟩 Root document took 410 ms
Lighthouse	Speed Index	🟨 5.1 s	🟥 5.9 s
Lighthouse	First Contentful Paint	🟨 2.9 s	🟥 3.3 s
Lighthouse	Time to Interactive	🟥 12.1 s	🟥 12.8 s
Lighthouse	Total Blocking Time	🟥 2,360 ms	🟥 2,990 ms
Lighthouse	Largest Contentful Paint	🟨 3.9 s	🟨 3.8 s
Lighthouse	Minimizes main-thread work	🟥 12.1 s	🟥 14.8 s
Lighthouse	JavaScript execution time	🟥 4.8 s	🟥 6.0 s
Lighthouse	Metrics	🟩 100%	🟩 100%
Lighthouse	Max Potential First Input Delay	🟥 1,480 ms	🟥 1,840 ms
Lighthouse	Reduce unused CSS	🟥 Potential savings of 68 KiB	🟥 Potential savings of 68 KiB
Lighthouse	Uses efficient cache policy on static assets	🟨 30 resources found	🟨 30 resources found
Lighthouse	Server Backend Latencies	🟩 150 ms	🟩 80 ms
Lighthouse	Avoids enormous network payloads	🟩 Total size was 1,884 KiB	🟩 Total size was 1,884 KiB
Lighthouse	Network Round Trip Times	🟩 20 ms	🟩 30 ms
Code coverage	Line coverage	🟩 90.2 %	🟩 90.2 %

589 other audits are unchanged.