[8.3](backport #594) Set explicit ExitTimeOut for MacOS agent launchd plist

[mergify]

This is an automatic backport of pull request #594 done by Mergify.

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• Start Time: 2022-06-23T01:28:52.730+0000

• Duration: 16 min 28 sec

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Test	Results
Failed	0
Passed	5986
Skipped	23
Total	6009

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🌐 Coverage report

Name	Metrics % (covered/total)	Diff
Packages	97.222% (70/72)	👍
Files	68.636% (151/220)	👍
Classes	68.254% (301/441)	👍
Methods	51.722% (826/1597)	👍
Lines	38.01% (8854/23294)	👍 0.021
Conditionals	100.0% (0/0)	💚

[aleksmaus]

will merge to 8.3 branch after BC, which is blocked at the moment

[mergify]

This pull request has not been merged yet. Could you please review and merge it @aleksmaus? 🙏

[mergify]

This pull request has not been merged yet. Could you please review and merge it @aleksmaus? 🙏