fix: Don't prematurely execute time-triggers before their start timestamp

[Arjentix]

Description

While original issues doesn't state it clearly I think that the problem was premature execution of time triggers.
So that trigger could be executed even before start. I fixed this.

• Now it's forbidden to register schedule-based time-trigger with start point before latest_block_timestamp + consensus_estimation time, where consensus_estimation = 4 secs and is a hardcoded constant. Everithing before this timestamp is considered already analyzed by Iroha. In other words -- time-triggers in the past are forbidden.
• As a consequence it's forbidden to register such trigger in genesis
• Now premature time-trigger look up is forced to not to execute trigger start point is in future
• This behavior is tested by a fixed change_asset_metadata_after_1_sec test

Forbidding time-triggers in the past was the simpliest solution and I actually think it was making sence to implement that in the initial solution.

Linked issue

• Closes [suggestion] Time trigger first execution time #3262

Benefits

• Less confusion about time-trigger execution time
• No more painful triggers in the past

Checklist

• I've read CONTRIBUTING.md
• I've used the standard signed-off commit format (or will squash just before merging)
• All applicable CI checks pass (or I promised to make them pass later)
• (optional) I've written unit tests for the code changes
• I replied to all comments after code review, marking all implemented changes with thumbs up

[coveralls]

Pull Request Test Coverage Report for Build 8070574387

Details

• -16 of 20 (20.0%) changed or added relevant lines in 3 files are covered.
• 3125 unchanged lines in 56 files lost coverage.
• Overall coverage decreased (-0.3%) to 56.519%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
core/src/smartcontracts/isi/triggers/mod.rs	0	2	0.0%
data_model/src/isi.rs	0	2	0.0%
data_model/src/events/time.rs	4	16	25.0%

Files with Coverage Reduction	New Missed Lines	%
core/src/sumeragi/network_topology.rs	1	98.78%
data_model/src/events/time.rs	1	67.81%
tools/kagami/src/crypto.rs	1	12.12%
data_model/src/metadata.rs	2	78.87%
primitives/src/unique_vec.rs	2	91.24%
config/src/kura.rs	3	80.0%
config/src/logger.rs	5	72.73%
logger/src/lib.rs	5	94.12%
tools/kagami/src/main.rs	5	0.0%
crypto/src/signature/secp256k1.rs	7	96.09%

Totals
Change from base Build 7884695009:	-0.3%
Covered Lines:	22455
Relevant Lines:	39730

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💛 - Coveralls