Fixed attempt of buckets update before map first render

[msereniti]

Time to time, randomly Datadog RUM that is monitoring our application FE reports the following error

TypeError: undefined is not an object (evaluating 'i.style.listImages')
  at updateBuckets @ https://example.com/_next/static/chunks/153e222f-eb05776e76b311d1.js:8:55922
  at refreshFeatureState @ https://example.com/_next/static/chunks/153e222f-eb05776e76b311d1.js:8:55812
  at initializeTileState @ https://example.com/_next/static/chunks/153e222f-eb05776e76b311d1.js:8:68593
  at _tileLoaded @ https://example.com/_next/static/chunks/153e222f-eb05776e76b311d1.js:8:73285
  at u @ https://example.com/_next/static/chunks/153e222f-eb05776e76b311d1.js:8:27141
  at processTask @ https://example.com/_next/static/chunks/153e222f-eb05776e76b311d1.js:7:292692
  at receive @ https://example.com/_next/static/chunks/153e222f-eb05776e76b311d1.js:7:292534

As Painter style property is being initialised in the render method instead of constructor, it seems that updateBuckets might be occasionally called even before the first map render when painter is not ready to do their job.

Launch Checklist

• Make sure the PR title is descriptive and preferably reflects the change from the user's perspective.
• Add additional detail and context in the PR description (with screenshots/videos if there are visual changes).
• Manually test the debug page. – irrelevant
• Write tests for all new functionality and make sure the CI checks pass. – irrelevant
• Document any changes to public APIs. – irrelevant
• Post benchmark scores if the change could affect performance. – irrelevant
• Tag @mapbox/map-design-team @mapbox/static-apis if this PR includes style spec API or visual changes. – irrelevant
• Tag @mapbox/gl-native if this PR includes shader changes or needs a native port. – irrelevant

[CLAassistant]

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