Restyle Fix ReadEvent for issue #11951

[restyled-io]

A duplicate of #12626 with additional commits that automatically address
incorrect style, created by Restyled.

⚠️ Even though this PR is not a Fork, it contains outside contributions.
Please review accordingly.

Since the original Pull Request was opened as a fork in a contributor's
repository, we are unable to create a Pull Request branching from it with only
the style fixes.

The following Restylers made fixes:

• clang-format

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   the original Pull Request

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   ```console
   git remote add upstream https://github.com/project-chip/connectedhomeip.git
   git fetch upstream pull/<this PR number>/head
   git merge --ff-only FETCH_HEAD
   git push
   ```
   

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[todo]

Need to add check when IM event server integration completes

connectedhomeip/src/controller/tests/data_model/TestRead.cpp

Lines 184 to 194 in ccb2f5e

	// TODO: Need to add check when IM event server integration completes
	IgnoreUnusedVariable(apSuite);
	onSuccessCbInvoked = true;
	};
	// Passing of stack variables by reference is only safe because of synchronous completion of the interaction. Otherwise, it's
	// not safe to do so.
	auto onFailureCb = [&onFailureCbInvoked](const app::EventHeader * eventHeader, Protocols::InteractionModel::Status aIMStatus,
	CHIP_ERROR aError) { onFailureCbInvoked = true; };
	chip::Controller::ReadEvent<TestCluster::Events::TestEvent::DecodableType>(&ctx.GetExchangeManager(), sessionHandle,

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This comment was generated by todo based on a TODO comment in ccb2f5e in #12631. cc @project-chip.