support cosmos-sdk with LSM changes in ICS v2

[MSalopek]

Summary

This thread on the forum and the resulting governance proposal requires that the LSM be included on Gaia.

cosmos/cosmos-sdk#16747 adds LSM to cosmos-sdk v45-ics

Problem Definition

Since Gaia is an ICS provider the ICS functionality must be maintained and no liveness or safety concerns regarding ICS integrating with LSM should be left unadressed.

To achieve this goal some features from ICS v3 (using cosmos-sdk v47) must be backported to ICS v2.
Since the changes are state breaking this would most likely yield in releasing ICS v2.1 that supports the LSM feature.

Proposal

Backport fixes, features and testing from ICS v3 into v2 to support LSM:

1. backport CancelUnbonding special handling. Context listed below:
   • staking msgServer.CancelUnbondingDelegation could possibly choose mismatching UnbondingDelegationEntry to cancel cosmos-sdk#12931
   • fix: fix the cancel unbond  cosmos-sdk#12967
   • [Bug]: AfterUnbondingInitiated can be called with invalid unbondingID cosmos-sdk#16042
   • refactor PutUnbondingOnHold handling #1045
   • feat!: upgrade ics sdk47 ibc7 #1019
   • fix!: avoid panicking on CancelUnbondingDelegation  #977
2. backport tests
   • add support to the "old" e2e test suite
   • backport integration tests

Task list

Must have

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1. backport CancelUnbonding
2. backport tests for CancelUnbonding
3. Remove the github.com/cosmos/cosmos-sdk => github.com/iqlusioninc/cosmos-sdk v0.45.17-0.20230803192832-aab739edf2ca replace directive and use the correct cosmos-sdk version
4. run go mod tidy
5. commit the changes after go mod tidy
6. cut ICS v2.1.0 release

Nice to have

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1. add sub-tasks that are nice to have for the proposed feature

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