feat(transaction-controller): snapshot txParamsOriginal when container types are applied

[matthewwalsh0]

Explanation

Snapshot txParamsOriginal in updateEditableParams when containerTypes are first applied, so consumers have a reference to the pre-wrap transaction parameters.

References

• fix(enforced-simulations): display original recipient and value metamask-extension#42002

Checklist

• I've updated the test suite for new or updated code as appropriate
• I've updated documentation (JSDoc, Markdown, etc.) for new or updated code as appropriate
• I've highlighted breaking changes using the "BREAKING" category above as appropriate

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Note

Low Risk
Low risk: adds a guarded metadata snapshot when containerTypes are first set, with tests covering non-application and non-overwrite cases.

Overview
When updateEditableParams applies containerTypes for the first time, it now snapshots the pre-wrap txParams into txParamsOriginal (without overwriting an existing snapshot).

Adds unit tests covering snapshot creation only on first wrap, no snapshot when containerTypes isn’t provided or already set, and preserving an existing txParamsOriginal; updates the changelog accordingly.

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