Do not fail builds due to missing tests in added/modified lines (#3271)

Only consider project overall status to not drop a considerable amount

Author: kwin

.codecov.yml

@@ -1,9 +1,11 @@
 # https://docs.codecov.com/docs/codecovyml-reference
 coverage:
   status:
+    # https://docs.codecov.com/docs/commit-status
     project:
       default:
         # basic
         target: auto
         # each PR must not lower the coverage by more than the given percentage
         threshold: 0.1%
+    patch: off