chore: remove orderedmap

[gjermundgaraba]

Description

closes: IBCGO-2338
closes: #8378

---

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• Linked to GitHub issue with discussion and accepted design, OR link to spec that describes this work.
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[linear]

IBCGO-2338 Decide how to deal with OrderedMap depencency

[codecov]

Codecov Report

Attention: Patch coverage is 96.96970% with 4 lines in your changes missing coverage. Please review.

Project coverage is 58.00%. Comparing base (16eb140) to head (28828e4).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
...es/apps/packet-forward-middleware/types/forward.go	97.47%	2 Missing and 1 partial ⚠️
...s/apps/packet-forward-middleware/ibc_middleware.go	80.00%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##             main    #8555       +/-   ##
===========================================
+ Coverage   17.66%   58.00%   +40.33%     
===========================================
  Files          28      317      +289     
  Lines        2711    22743    +20032     
===========================================
+ Hits          479    13191    +12712     
- Misses       2205     8948     +6743     
- Partials       27      604      +577     

Flag	Coverage Δ
08-wasm	65.99% <ø> (ø)
e2e	1.13% <ø> (ø)
ibc-go	63.45% <96.96%> (?)

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[DeshErBojhaa]

Great PR. Robust implementation of ser/de.

Approving this as the only comment I have is a non blocker.

[DeshErBojhaa]

Will you do this in this pr?

[gjermundgaraba]

No, I just added it because I happened to come across it.

[AdityaSripal]

approved modulo codecov

[Copilot]

Pull Request Overview

This PR removes the orderedmap dependency and refactors the packet-forward middleware to use native maps and time.Duration, updating associated tests and usage across the codebase.

• Eliminated all imports and usage of github.com/iancoleman/orderedmap.
• Refactored PacketMetadata/ForwardMetadata to use native Go types and helper methods (ToMap, ToMemo).
• Updated tests and IBC middleware to use the new ToMemo API and time.Duration instead of custom JSON wrappers.

Reviewed Changes

Copilot reviewed 18 out of 22 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
simapp/go.mod & modules/**/go.mod	Removed orderedmap from module dependencies
modules/apps/rate-limiting/v2/ibc_middleware.go	Minor TODO addition
modules/apps/packet-forward-middleware/types/keys.go	Added new metadata key constants
modules/apps/packet-forward-middleware/types/forward.go	Removed JSONObject/orderedmap, implemented native maps
modules/apps/packet-forward-middleware/types/forward_test.go	Expanded tests for new API and increased coverage
modules/apps/packet-forward-middleware/keeper/*.go & tests	Adjusted ForwardTransferPacket signature and memo handling
modules/apps/packet-forward-middleware/ibc_middleware.go	Updated OnRecvPacket to use GetPacketMetadataFromPacketdata
e2e/tests/packet_forward_middleware/**/*.go	Updated E2E tests to use ToMemo and removed orderedmap use
go.mod	Removed orderedmap globally

Comments suppressed due to low confidence (2)

modules/apps/packet-forward-middleware/types/forward.go:35

• The Validate method calls errors.New but the standard "errors" package is not imported. Add import "errors" or replace with errorsmod.New.

func (m ForwardMetadata) Validate() error {

modules/apps/packet-forward-middleware/types/forward.go:84

• json.Marshal is used but the "encoding/json" package is not imported. Add import "encoding/json".

	packetMetadataJSON, err := json.Marshal(packetMetadataMap)