fix: set `x/profiles` keeper of msg server into reference as DesmosApp

Description

Currently, x/profiles msg server is not a reference as DesmosApp and it is registered before setting IBC keepers. It occurs panics since there is no IBC features inside x/profiles msg server.

To fix it, we should set keeper of msg server into reference as DesmosApp, then the IBC keepers can be properly set.

Author Checklist

All items are required. Please add a note to the item if the item is not applicable and please add links to any relevant follow up issues.

I have...

[x] included the correct type prefix in the PR title
[ ] added ! to the type prefix if API or client breaking change
[x] targeted the correct branch (see PR Targeting)
[ ] provided a link to the relevant issue or specification
[ ] followed the guidelines for building modules
[ ] included the necessary unit and integration tests
[ ] added a changelog entry to CHANGELOG.md
[ ] included comments for documenting Go code
[ ] updated the relevant documentation or specification
[x] reviewed "Files changed" and left comments if necessary
[ ] confirmed all CI checks have passed

Reviewers Checklist

All items are required. Please add a note if the item is not applicable and please add your handle next to the items reviewed if you only reviewed selected items.

I have...

[ ] confirmed the correct type prefix in the PR title
[ ] confirmed ! in the type prefix if API or client breaking change
[ ] confirmed all author checklist items have been addressed
[ ] reviewed state machine logic
[ ] reviewed API design and naming
[ ] reviewed documentation is accurate
[ ] reviewed tests and test coverage
[ ] manually tested (if applicable)

Files Changed	Coverage
app/app_config.go	`ø`
app/wasm_config.go	`ø`
x/profiles/keeper/msg_server_app_link.go	`ø`
x/profiles/module.go	`0.00%`
app/app.go	`100.00%`
x/profiles/abci.go	`100.00%`
x/profiles/keeper/invariants.go	`100.00%`
x/profiles/keeper/keeper.go	`100.00%`
x/profiles/keeper/msg_server_chain_link.go	`100.00%`
x/profiles/keeper/msg_server_dtag_transfers.go	`100.00%`
... and 4 more

desmos-labs / desmos