Verify the weight-setters leaderboard's mobile table doesn't overflow — the PR's own screenshots are cropped fragments that can't confirm it

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Context

All 6 "after" screenshots supplied with #3875 are tightly-cropped shots of only the raw weight-setters table (dimensions 1200x634 / 688x634 / 358x650 — notably not matching the stated 1280/768/mobile viewport widths used in the corresponding "before" shots, which are full-page captures including nav/header/breadcrumbs/tabs). The crop starts mid-page and excludes all surrounding chrome, so the PR's own evidence cannot confirm: whether the section reuses the panel's card/border conventions, correct spacing relative to the existing "VALIDATOR STAKE" bar chart and UID/HOTKEY table above it, or — most importantly at 358px mobile — whether the 4-column table (#, VALIDATOR, WEIGHT SETS, SHARE) overflows or needs horizontal scroll, since no viewport edges are visible in the mobile crop either.

Requirement

Confirm the weight-setters table renders within the mobile viewport without overflow, in the actual page context (not a cropped fragment).

Deliverable

• File to check: the subnet Validators tab's weight-setters leaderboard component (introduced in feat(ui): add a weight-setters leaderboard to the subnet validators panel #3875).
• What "done" looks like concretely: capture full-page (not cropped) screenshots at mobile (358-375px), tablet, and desktop, both themes, showing the table in its actual page context alongside the validator stake chart and UID/HOTKEY table above it. If the 4-column table overflows at mobile width, apply the same overflow-wrapper fix used elsewhere in the app (see the related ListShell/explorer table-overflow issues) rather than leaving it clipped.

Acceptance criteria

• Full-page (uncropped) before/after screenshots exist at mobile, tablet, and desktop, both themes, matching the stated viewport dimensions
• The weight-setters table's spacing/border/card treatment relative to its sibling sections is confirmed consistent
• If mobile overflow is confirmed, it's fixed (horizontal scroll or mobile-card fallback) as part of this issue
• If no overflow is found, this issue closes with the corrected full-page screenshots as evidence

Non-goals

• Don't change the underlying weight-setters data or its ranking logic.

Size

Size: XS — keep this PR small (aim for ≤10 files / ≤1000 LOC).

Part of #2542.

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JSO-2882