Gracefully Handles "Bugged" Steam Market Skins

[Step7750]

As part of the March 4/26 update, new skins listed on SCM after that time can't be inspected in-game. Currently, the public API server rejects new un-cached market calls, however this can cause their browser to throttle other successful float fetches since they are receiving multiple 4xx errors.

This PR handles the situation more gracefully by skipping skins in this "bugged" state from getting rendered/fetched, along with a banner signifying the count and why.

Closes CSF-1134

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Note

Medium Risk
Changes market listing rendering and float-fetch behavior based on new Steam asset metadata; incorrect detection could hide float/sticker UI for legitimate skins or fail to warn users.

Overview
Prevents float/sticker UI and inspect-based network calls for a new class of Steam Market skins that are currently not inspectable, avoiding repeated 4xx errors and browser throttling.

Adds isBuggedSkin() detection (using unowned_contextid plus missing asset_properties float value metadata) and gates both ItemRowWrapper rendering and its fetchFloat() flow on it. The market utility belt now counts these items on the page and shows a warning banner that updates as g_rgAssets changes, and steam.d.ts is extended to type the new asset_properties field.

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