fix(quota): show actual overusage percentage for GitHub Copilot (#805)

Remove the Math.min(100, ...) clamp on usedPercent in the Copilot quota
provider so overusage flows through as the real value (e.g. 353%).
Update formatPercent to display values above 100% instead of clamping,
matching what the GitHub Copilot settings page reports.

The progress bar remains capped at 100% width via its own independent
clampPercent call, so only the label text is affected.

Co-authored-by: Ariel Sandor <39200214+arielsandor@users.noreply.github.com>

packages/ui/src/lib/quota/utils.ts

@@ -6,11 +6,10 @@ export const clampPercent = (value: number | null): number | null => {
 };
 
 export const formatPercent = (value: number | null): string => {
-  const clamped = clampPercent(value);
-  if (clamped === null) {
+  if (typeof value !== 'number' || Number.isNaN(value)) {
     return '-';
   }
-  return `${clamped}%`;
+  return `${Math.round(value)}%`;
 };
 
 export const resolveUsageTone = (percent: number | null): 'safe' | 'warn' | 'critical' => {