Add error handling for HttpError: Validation Failed: "message":"body is too long (maximum is 65536 characters)"}

[AriPerkkio]

Prevent GithubClient from attempting to post +65k character long messages. A simple String.slice might not be enough since we don't want to break formatting of markdown.

eslint-remote-tester-run-action/src/github-client.ts

Lines 46 to 50 in e3e6fa1

	/**
	* Post results to existing issue as comment or create new issue using
	* results as body
	*/
	async postResults(body: string): Promise<void> {

There is already some result limitation in place:

• Count of results are limited by max-result-count configuration option.

eslint-remote-tester-run-action/src/comment-templates.ts

Line 40 in e3e6fa1

const limitedResults = results.slice(0, maxResultCount);

• eslint-remote-tester truncates rows with +1000 characters: https://github.com/AriPerkkio/eslint-remote-tester/blob/bee1286e169ab37a3ec526fbdf60ce66473b1917/lib/engine/worker-task.ts#L134.

References jsx-eslint/eslint-plugin-react#3327