feat: ibc inflow only for registered tokens

[gsk967]

Description

Allowing ibc inflow for only registered tokens

closes: #XXXX

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Author Checklist

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please add links to any relevant follow up issues.

I have...

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

Reviewers Checklist

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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 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)

[codecov]

Codecov Report

❗ No coverage uploaded for pull request base (main@cde697d). Click here to learn what that means.
The diff coverage is 55.55%.

@@           Coverage Diff           @@
##             main    #1953   +/-   ##
=======================================
  Coverage        ?   66.86%           
=======================================
  Files           ?      100           
  Lines           ?     7950           
  Branches        ?        0           
=======================================
  Hits            ?     5316           
  Misses          ?     2221           
  Partials        ?      413           

Impacted Files	Coverage Δ
x/uibc/quota/keeper/quota.go	40.39% <ø> (ø)
x/uibc/quota/keeper/relay.go	0.00% <0.00%> (ø)
x/uibc/ics20/ibc_module.go	37.50% <55.55%> (ø)
util/ibc/ibc.go	58.82% <58.82%> (ø)