fix: cache block of pending transaction

[iamacook]

What it solves

Slow clearance of pending transactions

How this PR fixes it

Instead of the pending watcher waiting for the current block + 50 to clear an (unsuccessful) pending transaction upon wallet connection, the block number upon executing a transaction is cached. The watcher now waits for cached block number (if it exists) + 50 instead. It falls back to the current block number if the original block number retrieval failed.

How to test it

1. Create a queued transaction.
2. Execute the transaction with a very low gas limit.
3. Cancel the transaction with a high gas limit and immediately refresh.
4. The transaction should clear exactly 50 blocks post block stored under the transaction id in the store.

[github-actions]

CLA Assistant Lite All Contributors have signed the CLA.

[github-actions]

ESLint Summary View Full Report

Annotations are provided inline on the Files Changed tab. You can also see all annotations that were generated on the annotations page.

Type	Occurrences	Fixable
Errors	0	0
Warnings	0	0
Ignored	2	N/A

• Result: ✅ success
• Annotations: 0 total

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^{Report generated by eslint-plus-action}

[github-actions]

Deployment links

🟠 Rinkeby	⚪ Mainnet	🟣 Polygon	🟡 BSC	⚫ Arbitrum	🟢 Gnosis Chain

[coveralls]

Pull Request Test Coverage Report for Build 2028277882

• 11 of 16 (68.75%) changed or added relevant lines in 4 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+0.006%) to 35.158%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
src/logic/safe/store/reducer/pendingTransactions.ts	0	1	0.0%
src/logic/safe/store/actions/pendingTransactions.ts	2	6	33.33%

Totals
Change from base Build 2027159306:	0.006%
Covered Lines:	3409
Relevant Lines:	8770

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💛 - Coveralls

[DiogoSoaress]

Looks good to me!

[usame-algan]

Well done 👍

[francovenica]

Looks good to me

Created a tx with low gas and cancelled it in the MM extension with higher gas. As soon as the cancelation was succesful in the blockexplorer the tx changed from "peding" to "needs execution"
Tried the same by creating a tx that I knew will fail: queue a tx sending .01 Eth and then another one that sends all Eth. Execute the first tx and trying to execute the 2nd one will fail since the safe doesn't have enough funds anymore. The tx switched from "pending" to "need execution" once again as soon the tx failed in the block explorer