feat(perps): persist Pro orders sort prefs

[michalconsensys]

Explanation

In Pro mode, mobile's Positions/Orders panel has independent sort configs, and the same should be true for side filter: a user can keep Long on Positions and Short on Orders. #9838 persisted the Positions sort and side filter on proLayoutPreferences, but Orders sort/filter still lived in local React state and reset on remount (e.g. market navigation via stack push).

This extends the existing network-independent flat proLayoutPreferences bag with:

• ordersSideFilter — default 'all'
• ordersSortField — default 'time'
• ordersSortDirection — default 'desc'

Field unions match mobile's Orders panel: side filter 'all' | 'long' | 'short', sort 'orderValue' | 'size' | 'price' | 'time'. Values are stored as top-level scalars (same shape as the positions fields), so getter/setter/selector stay on shallow spread with no custom merge helper. Callers continue to use getProLayoutPreferences() / setProLayoutPreferences(patch).

ordersSideFilter is independent of positionsSideFilter.

TypeScript breaking: consumers that construct a full ProLayoutPreferences object must include the new required fields. Runtime persisted state is forward-compatible via merge-over-defaults.

References

• Fixes https://consensyssoftware.atlassian.net/browse/TAT-3644
• Related: feat(perps): persist Pro positions sort and side filter prefs #9838
• Related: feat(perps): persist Pro positions sort and side filter prefs metamask-mobile#34667

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 communicated my changes to consumers by updating changelogs for packages I've changed
• I've introduced breaking changes in this PR and have prepared draft pull requests for clients and consumer packages to resolve them

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Note

Low Risk
Preference schema extension with defaults merge; breaking only for code that manually constructs a full ProLayoutPreferences object without the new fields.

Overview
BREAKING: Extends flat ProLayoutPreferences with ordersSideFilter, ordersSortField, and ordersSortDirection (defaults 'all', 'time', 'desc') so Pro Orders panel filter/sort persist separately from Positions across markets and restarts, using the same getProLayoutPreferences() / setProLayoutPreferences(patch) flow.

Adds exported types ProOrdersSideFilter, ProOrdersSortField, and ProOrdersSortDirection; updates DEFAULT_PRO_LAYOUT_PREFERENCES, package exports, changelog, and tests (including independence from positions prefs and merge-over-defaults for older persisted state).

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