Merge branch 'eslint-ignore-coverage-files' into 'master'

Make ESLint ignore instrumented files for coverage analysis

## What does this MR do?
 
Ignore files in `coverage-javascript/` directory.

## Why was this MR needed?

When running ESLint after coverage analysis locally, it led to many linting errors. CI was not affected (ESLint and coverage are different jobs).

See merge request !7236

.eslintignore

+/coverage-javascript/
 /public/
 /tmp/
 /vendor/