test: add web positions, orders, collateral dialog, and oracle staleness indicator tests

[sanmipaul]

Summary

Adds test coverage for 4 UI components in the web positions area, addressing issues.

Tests added

OracleStalenessIndicator (#230)

• Staleness states (fresh, stale, unknown, warning)
• Threshold-based visual indicators
• Various staleness levels display

OrdersList (#231)

• Loading skeleton, empty state, indexer disabled
• Active orders with market name and type
• Multiple orders rendering
• Frozen status badge
• Cancel buttons per order

PositionsList (#232)

• Loading skeleton, empty state with trading link
• Positions with market name, side badge, size
• Short position badge
• Action buttons (Share, + Collateral, - Collateral, Close)
• Funding fee display and Claim button logic
• Indexer disabled state
• PnL color coding (green for positive, red for negative)

CollateralDialog (#233)

• Null position/mode guards
• Add/remove collateral dialog titles
• Wallet balance display
• Use Max button visibility
• Insufficient balance validation
• Cannot-remove-all-collateral validation
• Confirm button enable/disable logic
• Cancel handler

Closes #230
Closes #231
Closes #232
Closes #233

[vercel]

@sanmipaul is attempting to deploy a commit to the Ijai's projects Team on Vercel.

A member of the Team first needs to authorize it.

[drips-wave]

@sanmipaul Great news! 🎉 Based on an automated assessment of this PR, the linked Wave issue(s) no longer count against your application limits.

You can now already apply to more issues while waiting for a review of this PR. Keep up the great work! 🚀

Learn more about application limits