feat(txpool): add more logs to `runReorg`

1. Purpose or design rationale of this PR

For follower nodes, sometimes we have >500 txs for

case event := <-h.txsCh:
    h.BroadcastTransactions(event.Txs)

But for signer we only have a few.

We add more logs to investigate tx-broadcast issue.

Your PR title must follow conventional commits (as we are doing squash merge for each PR), so it must start with one of the following types:

[ ] build: Changes that affect the build system or external dependencies (example scopes: yarn, eslint, typescript)
[ ] ci: Changes to our CI configuration files and scripts (example scopes: vercel, github, cypress)
[ ] docs: Documentation-only changes
[x] feat: A new feature
[ ] fix: A bug fix
[ ] perf: A code change that improves performance
[ ] refactor: A code change that doesn't fix a bug, or add a feature, or improves performance
[ ] style: Changes that do not affect the meaning of the code (white-space, formatting, missing semi-colons, etc)
[ ] test: Adding missing tests or correcting existing tests

Has the version in params/version.go been updated?

[ ] This PR doesn't involve a new deployment, git tag, docker image tag, and it doesn't affect traces
[x] Yes

Does this PR have the breaking-change label?