fix(mempool): minor mempool improvements #19814

Job	Run time
Get changed files	28s
CI for Core lint Components	0s
Build prover images	0s
Build prover images with avx512 instructions	0s
CI for Docs	0s
CI for Prover Components	0s
E2E Test for Prover Components	0s
CI for Core Components / loadtest (OLD)	4m 11s
CI for Core Components / unit-tests	3m 57s
CI for Core Components / loadtest (NEW)	4m 12s
Build contract verifier / Prepare contracts	54s
Build core images / Prepare contracts	55s
CI for Core Components / integration-tests	4m 11s
CI for Common Components (prover or core) / build	3m 48s
Build TEE Prover images / Build and Push Docker Images	2m 59s
CI for Core Components / lint / code_lint	3m 48s
Build contract verifier / Build and Push Docker Images (contract-verifier, linux/amd64)	2m 47s
Build contract verifier / Build and Push Docker Images (verified-sources-fetcher, linux/amd64)	2m 54s
Build core images / Build and Push Docker Images (server-v2, linux/amd64)	2m 35s
Build core images / Build and Push Docker Images (external-node, linux/amd64)	2m 34s
Build core images / Build and Push Docker Images (snapshots-creator, linux/amd64)	2m 32s
Build core images / Build and Push Docker Images (external-node, linux/arm64)	2m 47s
Build contract verifier / Create release manifest	1s
Build core images / Create release manifest	1s
Github Status Check	1s
	45m 35s

Provide feedback