Add Temporal Operation Handler #5105

Job	Run time
cloud-test	1m 48s
check-protos	7m 56s
test-latest-deps	3m 59s
features-tests / test	8m 13s
build-lint-test (3.14, macos-arm)	3m 15s
build-lint-test (3.10, windows-latest)	7m 22s
build-lint-test (3.14, macos-intel)	10m 43s
build-lint-test (3.10, ubuntu-arm)	4m 42s
build-lint-test (3.14, windows-latest)	6m 25s
build-lint-test (3.14, ubuntu-latest)	5m 3s
build-lint-test (3.10, macos-intel)	11m 6s
build-lint-test (3.14, ubuntu-arm)	4m 47s
build-lint-test (3.10, macos-arm)	4m 59s
build-lint-test (3.10, ubuntu-latest)	3m 34s
	1h 23m 52s

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