Fix grouping of console logs

[mattbfb]

Summary: Chrome Dev Tools doesn't correctly display grouped console logs (i.e. console output between a console.group and console.groupEnd) when timestamps are all zero.

Populate the timestamp field so grouping functions as expected.

Differential Revision: D46605659

[facebook-github-bot]

This pull request was exported from Phabricator. Differential Revision: D46605659

[analysis-bot]

Platform	Engine	Arch	Size (bytes)	Diff
android	hermes	arm64-v8a	9,042,649	-40
android	hermes	armeabi-v7a	8,292,334	-152
android	hermes	x86	9,559,284	-8
android	hermes	x86_64	9,401,374	+12
android	jsc	arm64-v8a	9,601,860	+6
android	jsc	armeabi-v7a	8,728,988	+6
android	jsc	x86	9,689,350	+5
android	jsc	x86_64	9,935,421	+6

Base commit: a28881a3d79e732670157638aa5207c88c79718c Branch: main

[facebook-github-bot]

This pull request was exported from Phabricator. Differential Revision: D46605659

[facebook-github-bot]

This pull request was exported from Phabricator. Differential Revision: D46605659

[facebook-github-bot]

This pull request was exported from Phabricator. Differential Revision: D46605659

[facebook-github-bot]

This pull request was exported from Phabricator. Differential Revision: D46605659

[facebook-github-bot]

This pull request was exported from Phabricator. Differential Revision: D46605659

[facebook-github-bot]

This pull request was exported from Phabricator. Differential Revision: D46605659

[github-actions[bot]]

This pull request was successfully merged by Matt Blagden in 48791bcd9873b4db10435077c0560907fdb263b2.

^{When will my fix make it into a release? | Upcoming Releases}

[facebook-github-bot]

This pull request has been merged in facebook/react-native@48791bcd9873b4db10435077c0560907fdb263b2.