fix(docker): drop the unused .w-meter style; the bars test reads the loaded plugin's models (#5214)

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

steward/static/steward.css

@@ -405,9 +405,6 @@ body.dash-editing .widget-drawer { transform:translateY(0); }
 .w-item .w-label { flex:1; min-width:0; white-space:nowrap; overflow:hidden; text-overflow:ellipsis; }
 .w-item .w-label a { color:inherit; text-decoration:none; }
 .w-item .w-meta { flex-shrink:0; font-size:0.72rem; color:var(--text-muted); font-variant-numeric:tabular-nums; }
-/* A number with its share drawn behind it (--pct, 0–100), in the number's own
-   tone: the bar never stands without the figure it measures. */
-.w-meter { background:linear-gradient(90deg, color-mix(in srgb, currentColor 20%, transparent) var(--pct, 0%), transparent var(--pct, 0%)); border-radius:3px; }
 .w-note { font-size:0.7rem; color:var(--text-dim); margin-top:0.3rem; }
 .w-table col.w-barcol { width:9.5rem; }
 /* Bars of a figure's recent past, inline before it (Busiest Containers, #5214):