refactor(genesis): improve error handling by removing panics

[crStiv]

Description

This PR addresses issue #7698 by replacing panic calls with proper error handling in genesis functions across the codebase.

Changes

• Replaced panic with error returns in genesis functions:
  • InitGenesis in core/02-client now returns error instead of panicking
  • ExportGenesis in light-clients/08-wasm now returns error instead of panicking
  • InitGenesis in core/04-channel now returns error instead of panicking
  • InitGenesis in interchain-accounts/host now returns error instead of panicking
  • Changed error handling in simulation/genesis.go to log errors instead of panicking
• Improved error wrapping using fmt.Errorf with %w verb
• Updated function signatures to properly propagate errors

Modified files:

• modules/light-clients/08-wasm/keeper/genesis.go
• modules/core/simulation/genesis.go
• modules/core/04-channel/genesis.go
• modules/apps/27-interchain-accounts/host/keeper/genesis.go
• modules/core/02-client/genesis.go

Breaking Changes

• Genesis functions now return errors instead of panicking
• Callers of these functions need to handle potential errors

Next Steps

• Tests need to be updated to handle the new error returns
• Documentation should be updated to reflect the new error handling

Fixes #7698

[gjermundgaraba]

We've decided to hold off on this work as 0.52 has just been put on hold. I am very sorry for the inconvenience.