chore(all): remove copy of the 'for' variable

[jjjike2021]

Description

linter:

modules/core/genesis_test.go:284:3: The copy of the 'for' variable "tc" can be deleted (Go 1.22+) (copyloopvar)
                tc := tc
                ^
modules/core/genesis_test.go:421:3: The copy of the 'for' variable "tc" can be deleted (Go 1.22+) (copyloopvar)
                tc := tc
                ^
modules/core/genesis_test.go:449:3: The copy of the 'for' variable "tc" can be deleted (Go 1.22+) (copyloopvar)

modules/core/04-channel/simulation/decoder_test.go:78:3: The copy of the 'for' variable "i" can be deleted (Go 1.22+) (copyloopvar)
                i, tt := i, tt

closes: #XXXX

---

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[faddat]

thank you!

this helps me sleep better

[gjermundgaraba]

This is a good one, but I believe we have a lot of these around. Would you mind taking a closer look at the rest of the repo and fix this in a more cohesive way (so we stay consistent)

[faddat]

I would be really happy too! I started to do this last night actually.

Just so you know, it will be necessary to upgrade go, because that will get us the latest set of linters. I will toss in a PR later today.

[jjjike2021]

This is a good one, but I believe we have a lot of these around. Would you mind taking a closer look at the rest of the repo and fix this in a more cohesive way (so we stay consistent)

@gjermundgaraba checked whole codespace