parameter sequence for db upgrade could be improved

[mrabino1]

Describe the bug

./reth db --datadir /xxxxx/yyyyy/reth_storage migrate-v2 (works)

but

./reth db migrate-v2 --datadir /xxxxx/yyyyy/reth_storage (broken)
error: unexpected argument '--datadir' found

Usage: reth db migrate-v2 [OPTIONS]

For more information, try '--help'.

Steps to reproduce

see above

Node logs

latest on ubuntu

Platform(s)

Linux (x86)

Container Type

Not running in a container

What version/commit are you on?

latest

What database version are you on?

v1 going to v2

Which chain / network are you on?

mainnet

What type of node are you running?

Full via --full flag

What prune config do you use, if any?

No response

If you've built Reth from source, provide the full command you used

No response

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